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File Extensions

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August 2018
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990.6KB
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Computers & electronics Audio & home theatre DJ controllers

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# File Extensions File types with extensions that start with a number or symbol. Extension File Type File Description .!ut Misc uTorrent Incomplete Download .$$$ Backup Temporary File .$01 Developer DOS Pipe File .$db Backup dBASE Temporary File .$er Data GroupWise Database .0 Compressed Hacha Split Archive File .0 Game M3 DS Real Save File .000 Misc Windows CE Installation Data File .000 Disk Virtual CD ISO File .000 Compressed DoubleSpace Compressed File .001 Image Fax File .001 Backup HJSplit Split Archive .001 Misc 001 File Manager Split File .001 Developer Multimedia Fusion Backup File .001 Game Snes9x Slot 2 Saved State .001 Backup Norton Ghost Disk Backup .001 Misc 001 File Joiner & Splitter File .001 Misc SplitJoin Split File .0xe Executable F-Secure Renamed Virus File .113 Backup Iomega Backup File .123 Data Lotus 1-2-3 Spreadsheet .123 Data PCB123 Circuit Board Design .1pe Data TurboTax Form File .1ph Data TurboTax File .1st Text Readme File .256 Settings Descent 2 Color Palette File .2bp Raster Image Pocket PC Bitmap Image File .2d Image VersaCAD 2D Drawing .2mg Disk Apple IIGS Disk Image .386 System Windows Virtual Device Driver .3d Image Stereo CAD-3D Image File .3d2 Image Stereo CAD-3D 2.0 Image File .3d4 3D Image Stereo CAD-3D 2.0 Image File .3da Image 3D Assembly .3df 3D Image 3D Format .3dl 3D Image LightConverse 3D Model File .3dm 3D Image Rhino 3D Model .3dmf 3D Image QuickDraw 3D Metafile .3dr Data 3DMark Results File .3ds 3D Image 3D Studio Scene .3dt Data 3D Topicscape File .3dv 3D Image 3D VRML World .3dx 3D Image Rhino 3D Model File .3dxml 3D Image Dassault Systemes 3D XML File .3g2 Video 3GPP2 Multimedia File .3gp Video 3GPP Multimedia File .3gp2 Video 3GPP Multimedia File .3gpp Video 3GPP Media File .3me Data TurboTax Form File .3mm Video 3D Movie Maker Movie Project .3p2 Video 3GPP Multimedia File .3pe Data TurboTax 2008 Form File .411 Raster Image Mavica Thumbnail Image .4db Developer 4th Dimension Database Structure File .4dd Developer 4th Dimension Database Data File .4dl Data 4th Dimension Database Log File .4dv Data 4D View Ultrasound File .4mp Audio 4-MP3 Database File .60d Video CCTV Video Clip .669 Audio UNIS Composer 669 Module .6cm Audio Six Channel Module .7z Compressed 7-Zip Compressed File .83p Misc TI-83 Calculator File .8ba Plugin Photoshop Plug-in .8bc Plugin Photoshop 5.0 Plug-in .8be Plugin PhotoDeluxe Plug-in .8bf Plugin Filter Factory Image Filter .8bf Plugin Photoshop Filter Plug-in .8bi Plugin Photoshop Plug-in .8bi8 Plugin Photoshop Plug-in .8bl Plugin Photoshop Plug-in .8bs Plugin Photoshop 5.0 Selection Plug-in .8bx Plugin PhotoDeluxe Plug-in .8by Plugin PhotoDeluxe Plug-in .8cm Audio Eight Channel Module .8li Plugin Photoshop Scripting Plug-in .8med Audio Amiga OctaMed Music File .8pbs Image Adobe Photoshop Macintosh File .8st Settings 8start Launcher File .8svx Audio Amiga 8-Bit Sound File .8xg Data TI-83/84 Plus Group File .8xi Raster Image TI-83/84 Plus Picture File .8xk Data TI-83 Plus Application Upgrade File .8xp Misc TI-83 Plus Calculator File .8xs Data TI-83/84 Plus String File .8xu System TI-83 Plus Operating System File .8xv Data TI-83/84 Plus Variable File .^^^ Data Pervasive.SQL Database File .{pb Data Corel WordPerfect Document Index File .~hm Data HostMonitor TestList Backup File A File Extensions File types with extensions that start with the letter A. Extension File Type File Description .a Developer Static Library .a00 Compressed ALZip Second Split Archive File .a01 Compressed ALZip Third Split Archive File .a02 Compressed ALZip Fourth Split Archive File .a2m Audio AdLib Tracker 2 File .a2m Settings TS-AudioToMIDI Settings File .a2w Developer Alice World .a3l Data Authorware 3 Library .a3m Data Authorware 3 Macintosh File .a3w Data Authorware 3 Windows File .a4l Data Authorware 4 Library .a4m Data Authorware 4 Macintosh File .a4w Data Authorware 4 Windows File .a5l Data Authorware 5 Library .a5w Data Authorware 5 Windows File .a65 Data Authorware 6.5 File .a6p Executable Authorware 6 Program .aa Disk Generic CD Image .aa Audio Audible Audio Book File .aa3 Audio ATRAC Audio File .aac Audio Advanced Audio Coding File .aam Settings Authorware Map File .aao Data Agenda At Once File .aao Game America's Army Map File .aawdef Misc Ad-Aware Definitions File .aax Audio Audible Enhanced Audiobook File .ab Developer Applix Builder File .ab Data DNA Sequence File .ab1 Data DNA Electropherogram File .ab2 Data Print Shop Address Book File .ab3 Data PhotoImpact 3 Album File .aba Backup Palm Address Book Archive .aba Plugin Avant Browser Add-on File .abbu Backup Address Book Backup .abc Developer ABC Source File .abc Audio ABC Music Notation .abcd Data AudioVisual Book Data File .abf Font Adobe Binary Screen Font File .abi Data DNA Chromatogram File .abk Backup Automatic Backup File .abk Game Arena Opening Book File .abk Game Need for Speed Underground Audio File .abm Audio Music Album .abm Raster Image Photo Album .abp Data AVS Barcode Profile .abr Misc Adobe Photoshop Brushes File .abw Text AbiWord Document .aby Data AOL Address Book File .ac Executable Autoconf Script .ac$ Misc AutoCAD Temporary File .ac3 Audio Audio Codec 3 File .ac5 Image ArtCut 5 Document .ac6 Image ArtCut 6 Document .aca Data Agent Character Animation File .acb Misc AOL Cab Launcher .acc Data Graphics Accounts Data File .accdb Data Access 2007 Database File .acd Audio ACID Project File .acd Developer RSLogix 5000 Program .ace Compressed WinAce Compressed File .acf Data Agent Character Data File .acfm Font Adobe Composite Font Metrics File .acg Data Agent Preview File .acl Misc AutoCorrect List File .acm Audio Interplay Audio File .acr Backup Acer eRecovery Management Backup File .acr Image American College of Radiology Format .acr Executable ACRobot Script .acrobatsecuritysettings Settings Adobe Acrobat Security Settings File .acrodata Settings Acrobat Data File .acs Misc Agent Character File .acsm Misc Adobe Content Server Message File .act Text FoxPro Documenting Wizard Action Diagram .act 3D Image Genesis3D Actor File .act Audio ADPCM Compressed Audio File .action Executable Automator Action .acx Game Atari ST Program .ad Misc After Dark Screensaver .ada Developer Ada Source Code .adb Developer Ada Body File .adb Developer Alpha Five Database File .adc Image Scanstudio 16 Color Image .add Misc Dynamics AX Developer Documentation File .ade Data Access Project Extension .adf Disk Amiga Disk File .adg Audio Ableton Device Group .adi Misc Dynamics AX Developer Documentation Index File .adi Image AutoCAD Device-Independent Binary Plotter File .adm Misc Portfolio Admin-Level Access Flag .adm System Administrative Template File .adp Data Access Project .adr Web Opera Bookmarks File .ads Developer Ada Specification File .adt Text AutoCAD Audit Log .adt Data ACT! Document Template .adx Data Approach Index File .adz Disk Compressed Amiga Disk File .aea Settings Ae Timer Alarm Document .aep Developer Activ E-Book Project .aep Video After Effects Project .aex Web Alpha Five Compiled Global Functions File .afc Audio Mass Effect 2 Audio File .afm Font Adobe Font Metrics File .afp Encoded FileProtector Encrypted File .afp Page Layout Advanced Function Presentation File .afploc Misc Apple Filing Protocol Location .afs Data STAAD.foundation Project File .aft Data Ancestry.com Family Tree Database .afx Raster Image Auto FX Photo/Graphic Edges Image .agd Data AgileGraph Data File .agd Misc Agile Advantage E-mail Attachment .agi Developer Asterisk Gateway Interface File .agif Raster Image Active GIF Creator Project .agm Audio DTS Multi-channel Pro Packer File .agp Raster Image ArtGem Project File .ahd Misc Dynamics AX Online Help Data File .ahi Misc Dynamics AX Online Help Index File .ahk Executable AutoHotkey Script .ahl Settings eMule Metadata File .ahs Settings Adobe Halftone Screen File .ahx Audio WinAHX Tracker Module .ai Vector Image Adobe Illustrator File .aic Raster Image Advanced Image Coding File .aif Audio Audio Interchange File Format .aif Misc Symbian Application Information File .aifb Data AIF Builder Project File .aifc Audio Compressed Audio Interchange File .aiff Audio Audio Interchange File Format .aim Text AIMMS ASCII Model File .aim Misc AOL Instant Messenger Launch File .ain Compressed AIN Compressed File Archive .aip Plugin Illustrator Plug-in .air Executable Adobe AIR Installation Package .ais Audio Velvet Studio Instrument .ais Raster Image ACDSee Image Sequence File .ait Settings Adobe Illustrator Template .ajp Video CCTV Video File .akp Audio Akai Sampler File .al Audio A-Law Compressed Sound Format .alaw Audio A-Law Compressed Sound Format .alb Developer Alpha Five Library .albm Raster Image HP Photo Printing Software Album File .alc Data Dynamics AX Label Description File .ald Data Dynamics AX Application Label Data File .ali Data Dynamics AX Label Index File .all Audio Cubasis Project File .alt Misc Dynamics AX Temporary File .alx Settings BlackBerry Application Loader XML File .alx Web ActiveX Layout Control File .alz Compressed ALZip Archive .am1 Game Adventure Maker .am4 Developer AutoPlay Media Studio 4 Project File .am5 Developer AutoPlay Media Studio 5 Project File .am6 Developer AutoPlay Media Studio 6 Project .am7 Developer AutoPlay Media Studio 7 Project .amb Data AIMMS Model File .amf Audio Advanced Module File .amfm Font Adobe Multiple Font Metrics File .amr Audio Adaptive Multi-Rate Codec File .ams Settings Adobe Monitor Setup file .ams Audio Velvet Studio Module .ams Audio Extreme Tracker Module .amsorm Data OnLine Ringman Auction Client File .amu Image Sony Photo Album .amv Video Anime Music Video File .amx Video Adobe Motion Exchange File .amx Plugin AMX Mod Plugin File .amxx Plugin AMX Mod X Plugin File .amz Music Amazon MP3 Downloader File .an1 Data Street Atlas USA Draw File .an2 Game Croc Legend of the Gobbos Animation File .an8 3D Image Anim8or File .ani System Windows Animated Cursor .anm 3D Image 3D Animation File .anme Data Anime Studio Project .ann System Help Annotations .ans Text ANSI Text File .aob Audio DVD-Audio Audio Object File .aod Misc Dynamics AX Object Data File .aoi Misc Dynamics AX Application Object Index File .aol Misc America Online File .aos System ARCHOS PCtablet Firmware File .ap Web Active Page .apa Developer RSView Development Project Archive .ape Audio Monkey's Audio Lossless Audio File .ape Plugin AVS Plugin Effects File .apf Audio Sony Ericsson Firmware Acoustics File .apf Misc Adobe Profile File .api Plugin Acrobat Plug-in .apk Executable Android Package File .apm Raster Image Aldus Placeable Metafile Image .apng Raster Image Animated Portable Network Graphic .app Executable Mac OS X Application .app Executable FoxPro Generated Application .app Executable Symbian OS Application .applescript Executable AppleScript File .application Settings ClickOnce Deployment Manifest File .appref-ms Settings Microsoft Application Reference File .apr Data ArcView Project File .apz Compressed Autoplay Media Studio Exported Project .ar Compressed Unix Static Library .arc Compressed Compressed File Archive .arc Data Nintendo Archive File .arc Game African Safari Data File .arch00 Game F.E.A.R. Game Archive .ard 3D Image ArtiosCAD Workspace File .arf Video WebEx Advanced Recording File .arh Compressed ProTool Compressed Project File .arh Data ArheoStratigraf Project File .ari Compressed ARI Compressed File Archive .arj Compressed ARJ Compressed File Archive .ark Compressed PowerDesk Pro Archive .arl Settings AOL Organizer File .aro Web SteelArrow Web Application File .arp Settings Advanced RAR Password Recovery Setup .arr Image Amber Graphic File .arr Misc Advanced RAR Password Recovery Project .art Raster Image AOL Compressed Image File .art Vector Image Art Document .art Developer Artifacts Artifact File .artproj Developer Artifacts Project .artwork Raster Image ArtStudio Image .arw Raster Image Sony Digital Camera Image .arw Raster Image ArtStudio Image .as Developer ActionScript File .as4 Backup askSam Backup File .asa Web ASP Configuration File .asat 3D Image Assemble SAT 3D Model File .asc Developer ActionScript Communication File .asc Text Autodesk ASCII Export File .asc Text ASCII Text File .ascii Text ASCII Text File .ascx Web Active Server Custom Control .asd Backup Word AutoSave File .ase Text Autodesk ASCII Scene Export File .ase Audio Velvet Studio Sample .asf Video Advanced Systems Format File .ashx Web ASP.NET Web Handler File .asi Developer Alpha Five Variable File .ask Data askSam Database .asl Settings Photoshop Style .asm Data Pro/ENGINEER Assembly File .asm Developer Assembly Language Source Code File .asm Data Solid Edge Assembly File .asmx Web Active Server Method File .asnd Data Adobe Sound Document .asp Web Active Server Page .aspx Web Active Server Page Extended File .asr Web ActionScript Remote Document .ast Settings Adobe Color Separations Table .ast Data ClarisWorks Assistant File .aswcs Settings Avast! Compressed Skin File .asws Settings Avast! Skin File .asx Video Microsoft ASF Redirector File .at3 Audio ATRAC3 Audio File .at5 Data Lowrance Map File .atf Settings Photoshop Transfer Function File .atn Settings Photoshop Actions File .atom Web Atom Syndication Format .atr Disk Atari Disk Image .atrac Audio Sony ATRAC Audio File .att Data Alphacam Lathe Tool File .att Web Web Form Post Data File .atx Plugin Animation Master Plugin File .aty Text Association Type Placeholder .atz Settings Aston Compiled Theme .atz Misc Atomic Time Zone File .au Audio Audio File .au3 Developer AutoIt v3 Script .aud Audio Video Game Compressed Audio File .aup Audio Audacity Project File .aut Developer AutoIt Script File .avb Video Avid Bin File .avi Video Audio Video Interleave File .avl Misc ArcView Legend File .avr Audio Audio Visual Research File .avs Settings AVS Preset File .avs Video Application Visualization System File .avs Video AviSynth Script File .avx Plugin ArcView Extension File .aw Data Answer Wizard File .awb Audio AMR-WB Audio File .awc Misc Emulex AWC Firmware Update File .awd Image FaxView Document .awd Raster Image Artweaver Document .awd Misc Award BIOS Update File .awg Data Activeworlds Object Group File .awk Executable AWK Script .ax Plugin DirectShow Filter .axd Web ASP.NET Web Handler File .axm Video AXMEDIS Object .axp Settings CDBurnerXP Audio Compilation File .axx Compressed AxCrypt Encrypted File .azw Data Amazon Kindle eBook File .azz Data AZZ Cardfile Database File B File Extensions File types with extensions that start with the letter B. Extension File Type File Description .b Developer BASIC Source File .b2a Encoded Btoa Encoded File .b5i Disk BlindWrite 5 Disk Image .b5t Disk BlindWrite 5 Disc Track Information File .b64 Compressed Base64 MIME-Encoded File .b6i Disk BlindWrite 6 Disc Image .b6t Disk BlindWrite 6 Track Information File .ba Compressed Scifer External Header Archive .bac Backup Backup File .backupdb Backup Time Machine Backup Folder .bad Text Exchange Badmail File .bafl Data BurnAware File List .bak Backup Firefox Bookmarks Backup .bak Backup Backup File .band Audio GarageBand Project File .bap Audio Blaze Audio Wave Information File .bar Game Age of Mythology Data File .bar Game Age of Empires III Data File .bas Developer BASIC Source Code File .bat Executable DOS Batch File .bau Settings OpenOffice.org AutoText File .bav Plugin AVG Anti-Virus The Bat! Plugin File .bb Developer Blitz Source Code File .bbc Developer BBC BASIC Data File .bbs Text Bulletin Board System Text .bc Misc BitComet Partially Downloaded File .bc! Misc BitComet Incomplete File .bcc Data Calendar Creator File .bcf Page Layout Business Card Designer Pro File .bci Data Belarc Advisor Report File .bck Backup VMX Backup File .bckp Backup Ad-Aware Quarantined File .bcm Backup Microsoft Works Communications Script Backup .bcm Data Business Contact Manager File .bcmx Settings Business Contact Manager Customization .bcp Developer Borland C++ Makefile .bcp Settings BlackMagic Custom Palette .bcp Page Layout Business Card Designer Plus File .bdb Backup Microsoft Works Database Backup File .bdd Audio CARA Sound Radiation Data File .bdf Font Glyph Bitmap Distribution Format .bdf Disk MIDAS BDF Disk Image File .bdf Data Binary Data File .bdic Data Chrome Dictionary File .bdl 3D Image CoCreate Bundle File .bdm Video AVHCD Information File .bdmv Video Blu-ray Disc Movie Information File .bdp Text Exchange Diagnostic Message .bdr Text Exchange Non-Delivery Report Body File .bdr Misc Publisher Borders File .bean Text Bean Rich Text Document .bet Developer BETA Source File .bfa Encoded Blowfish Encrypted File .bfc Misc Windows Briefcase File .bfx Data Bitware Fax Document .bgi Settings BgInfo Configuration File .bgl Data Babylon Glossary File .bgt Data Graphics Accounts Data File .bh Compressed BlakHole Archive .bhx Encoded BinHex Encoded File .bib Text Bibliography Document .bib Text BibTeX Bibliography Database .bic Game Civilization 3 Scenario .bif Disk Boot Information File .big Game Electronic Arts Game Data File .bik Game Video Game Movie File .bik Video BINK Video File .bin Executable Unix Executable File .bin Disk CDRWin CD Image .bin Game Sega Genesis Game ROM .bin Data Generic Binary File .bin Encoded Macbinary Encoded File .bin Game Nintendo DS Binary File .bin Video Binary Video File .bio System BIOS File .bip 3D Image Character Studio Biped File .biq Game Civilization 3 Scenario .bix Game Civilization 3 Scenario .bix Video Kodicom Video File .biz Page Layout Broderbund Business Card File .bjo Data TablEdit Tablature File .bk Data FrameMaker Book File .bkc Backup Backup4all Backup Catalog .bkf Backup Windows Backup Utility File .bkk Data BookBuddi eBook File .bkp Backup Backup File .bks Backup Microsoft Works Spreadsheet Backup File .bks Settings NTBackup Settings File .blb Data Blob Data File .bld Data Envisioneer Building Project File .blend 3D Image Blender 3D Data File .blg Data Windows Binary Performance Log File .blkrt Raster Image Block Artist Image File .blob Settings Valve Steam Archive .blp Game Blizzard Texture File .bls Game Blockland Saved Game File .blt Settings AIM Buddy List .blu Plugin FileMaker Pro Runtime Extension .blz Image Compressed Bitmap Graphic .bmc Image Embroidery Image File .bmc Image Bitmap Cache File .bmd Game GameCube 3D Model File .bme Game BeatMania 7-Key Song File .bmf Raster Image Binary Material File .bmf 3D Image FloorPlan File .bmk Video PowerDVD MovieMark File .bmk System Help Bookmarks .bml Web Bean Markup Language File .bmp Raster Image Bitmap Image File .bms Game BeatMania Song File .bna Text Barna Word Processor Document .bnd Misc DB2 CLI Bind File .bnk Game Test Drive Unlimited Data Package .boc Text EasyWord Big Document .bok Data TestGen Testbank File .bok Web ProStores Dynamic Web Page .bom System Mac OS X Bill of Materials File .boo Compressed Booasm Compressed Archive .boot Settings InstallShield Boot File .bootskin Misc Stardock Bootskin File .box Video Kodicom Video .box Audio CARA Loudspeaker Design File .box Data E-mail Mailbox .bp2 Misc AutoCAD Batch Plot File .bp3 Misc AutoCAD Batch Plot File .bpa Backup StorageSync Backup Archive .bpb Backup PowerDesigner Business Process Backup File .bpg Developer Borland Project Group .bpl Misc AutoCAD Batch Plot File .bpl Developer Borland Package Library .bpm Backup PowerDesigner Business Process Model .bps Backup Works Document Backup .br3 3D Image Bryce 3 Scene File .br4 3D Image Bryce 4 Scene File .br5 3D Image Bryce 3D Scene File .brd Data EAGLE Circuit Board File .brk Raster Image Brooktrout Fax Document .bro Page Layout CreataCard Brochure Project .bro 3D Image Broadleaf Tree Model .brw Data Calyx Point Borrower File .bs2 Developer BASIC Stamp 2 Code File .bs4 Video Mikogo Session Video Recording .bsa Game Bethesda Softworks Archive .bsb Game BioShock Saved Game File .bsf Video Blu-ray AVC Video File .bsp Game Valve Game Map File .bst Misc BibTeX Style Document .btf Data NationsBank Check Images .btif Data NationsBank Check Image File .btm Data BizTalk Map File .btoa Encoded Binary-to-ASCII Encoded File .btr Data Btrieve Database File .btw Page Layout BarTender Label .buf Misc Buffer File .bun Audio Cakewalk Bundle File .bundle Plugin Mac OS X Application Plug-in .bup Backup Backup File .bup Backup DVD IFO Backup File .bvh 3D Image Biovision Hierarchy Animation File .bwa Disk BlindWrite Disk Information File .bwf Audio Broadcast Wave File .bwi Disk BlindWrite CD/DVD Disc Image .bws Disk BlindWrite Sub Code File .bwt Disk BlindWrite 4 Disk Image .bxx Settings BS Contact Parameter File .byu Video Brigham Young University Movie .bz Compressed Bzip Compressed File .bz2 Compressed Bzip2 Compressed File .bzip Compressed Bzip Compressed Archive .bzip2 Compressed Bzip2 Compressed Archive .bzw Game BZFlag World File C File Extensions File types with extensions that start with the letter C. Extension File Type File Description .c Developer C/C++ Source Code File .c Developer Lite-C Script .c00 Compressed WinAce Split Archive File .c01 Audio Typhoon Wave Audio File .c01 Compressed WinAce Split Archive Part 1 File .c02 Compressed WinAce Split Archive Part 1 File .c2d Disk WinOnCD Disc Image .c2r Settings Windows Media Center Click-To-Record File .c4 Raster Image JEDMICS Image File .c4d 3D Image Cinema 4D Model File .ca Misc Initial Telnet Cache .cab System Windows Cabinet File .cache Misc Cache File .cad 3D Image BobCAD-CAM File .caf Audio Core Audio File .cag Image Clip Art Gallery .cal Raster Image CALS Raster Graphic .cal Page Layout Calendar File .calb Misc Coolect Album File .cals Raster Image CALS Raster Graphic File .cam Misc Gerber CAM Job File .cam Image Casio Digital Camera Picture .camp Settings WCS Color Appearance Model Profile File .camrec Video Camtasia Studio Screen Recording .can Raster Image Canon Navigator Fax Document .cap Developer Construct Game Development File .cap Data Packet Capture File .car Compressed CAR Archive .cat Data Advanced Disk Catalog Database .catpart Image CATIA V5 Part Document .catproduct 3D Image CATIA 5 Assembly File .cav Data Comodo Virus Definitions File .cb7 Compressed Comic Book 7-Zip Archive .cbf Game ChessBase Game Information File .cbf Page Layout Calendar Builder File .cbg Data CyberGauge Data File .cbk Backup Backup Configuration File .cbl Developer COBOL Program .cbr Compressed Comic Book RAR Archive .cbt Misc Computer Based Training File .cbt Compressed Comic Book TAR File .cbz Compressed Comic Book ZIP Archive .cc Developer C++ Source Code File .ccd Disk CloneCD Disk Image .ccf Encoded CryptLoad Container File .cch Data Corel Chart File .ccn Developer Compressed Multimedia Fusion File .ccr Data ASTM Continuity of Care Record .cct Data Director Protected Cast Resource .ccx Plugin Click & Create Extension .cd Developer Visual Studio Class Diagram .cd Disk CD-i OptImage .cd2 Page Layout Click'N Design 3d File .cd5 Raster Image Chasys Draw Image File .cda Audio CD Audio Track Shortcut .cdb Data CardScan Contacts Database .cdb Data Symbian Phonebook Database .cdb Data Pocket Access Database .cdd Data ConceptDraw Drawing File .cdf Data Content Definition File .cdf Web Channel Definition Format .cdf Data Common Data Format .cdg Raster Image Compact Disc Plus Graphics Image .cdi Disk DiscJuggler Disc Image .cdl 3D Image CADKEY Wireframe Design File .cdp Game Trainz Simulator Content Dispatcher Pack .cdp Data CD/Spectrum Pro File .cdp2 Game Trainz Classics Content Dispatcher Pack 2 .cdr Audio Raw Audio CD Data .cdr Vector Image CorelDRAW Image File .cdr Data Crash Data Retrieval Data File .cdt Settings CorelDRAW Image Template .cdx Data Compound Index File .cdx Vector Image CorelDRAW Compressed File .ce Image Computer Eyes Image .ceb Misc Apabi eBook File .cel Audio Audition Loop .cel Image MicroStation Cell Library .cel Data Battery 3 Drum Cell File .celtx Data Celtx Project File .cer Web Internet Security Certificate .cfg Settings Citrix Server Connection File .cfg Settings Configuration File .cfge Game Jewel Quest Configuration File .cfl Misc IMVU Product File .cfm Web ColdFusion Markup File .cgf Game Far Cry Model File .cgi Executable Common Gateway Interface Script .cgm Vector Image Computer Graphics Metafile .cgp Encoded PixelCryptor Encrypted File .cgr Settings Quest3D Channel Group File .cgz System Linux Drivers Archive .cgz Game AssaultCube Map File .ch3 Page Layout Harvard Graphics DOS Chart File .cha Settings Photoshop Channel Mixture .cha Font Character Layout File .cha Web Online Chat Configuration File .charset Text Character Set .chat Web Online Chat Configuration File .chg Data Quicken Online Data File .chk Data InterCheck Checksum Database .chk Game StarCraft Chunk File .chk Misc Saved File Fragment .chl Settings WinFast PVR2 Channel List .chm Web Compiled HTML Help File .chml Encoded Chameleon Encrypted Database File .chn Data Ethnograph Data .chord Text Song Chords File .chr Font Borland Character Set .cht Game SNES Cheat File .chw Misc Compiled Help Index File .cidb Audio iTunes CD Information File .cif Disk Easy CD Creator Disk Image .cil Image ClipArt Gallery Packaged File .cin Raster Image Kodak Cineon Bitmap File .cit Raster Image Intergraph Bitmap Image File .ck9 Backup Cook'n Cookbook Backup File .ckd Data Kubotek Design Container .ckt Data CircuitMaker File .cl2 Data HY-TEK Meet Results File .cl4 Data Easy CD Creator 4 Project File .cl5 Disk Easy CD Creator 5 Saved Project .class Developer Java Class File .clb Data ICQ Contact List .clb System COM+ Catalog File .cld Page Layout Canon CD Label Template .clg Data Collage Maker Project File .clg Settings Windows Catalog File .clix Data CLIX Command File .clk Data Corel R.A.V.E Project File .clkk Misc Clicker Keyboard .clkt Misc Clicker Template .clkw Misc Clicker Word Bank .clkx Misc Clicker Grid Set .clm Data MagicJack Call Log File .clm Data GenePattern CEL Descriptor File .clp Data Windows Clipboard File .clpi Video Blu-ray Clip Information File .clr Settings CryptLoad Router Information File .clr Misc Flash Color Set .cls Developer Program Class File .clx Encoded Ceelox SecureMail Secure Message .cm Game CLEO Custom Mission .cm Settings Cable Modem Configuration File .cm2 3D Image Poser Camera Set File .cmbl Data Logger Pro Data File .cmd Executable Windows Command File .cmf Audio Creative Music Format .cmm Misc Corel Multimedia Manager Album .cmp 3D Image Solid Edge Wire Harness File .cmp Vector Image Generic CADD Component File .cms Web Content Management System .cmx Vector Image Corel Metafile Exchange Image File .cmz 3D Image Compressed Poser Camera Set File .cna Data Catena Project File .cnc Misc CNC Machine Tool Path .cnf Settings Telnet Configuration File .cnt System Help Contents File .cnv Vector Image Canvas 6-8 Drawing File .cob Developer COBOL Source Code File .cod Developer Compiled Source Code .col Game Grand Theft Auto Collision File .colorpicker Plugin Color Picker Plugin .com Executable DOS Command File .comicdoc Page Layout Comic Life Document .component Plugin Mac OS X System Component .con Web Concept Application Source File .conf Settings Unix Configuration File .config Developer Configuration File .contact Data Windows Contact File .copy Audio Sony Ericsson Protected Content File .cor Data Trimble Corrected SSF File .cox Plugin Click & Create Extension .cp Developer Captivate Source File .cp Developer Xcode C++ Source File .cp3 Misc Grand Prix 3 Cockpit Shape File .cp9 Compressed ChoicePoint Encrypted File .cpc Raster Image CPC Compressed Image File .cpd Raster Image Compressed PhotoDefiner Image File .cpg Raster Image Manga Studio Page File .cpg Game StarCraft Campaign File .cpgz Compressed Compressed CPIO Archive .cph Page Layout Corel Print House File .cpi System Codepage Information File .cpi Video AVCHD Video Clip Information File .cpio Encoded Unix CPIO Archive .cpl System Windows Control Panel .cpmz Data Miradi/ConPro Project File .cpp Developer C++ Source Code File .cpr Audio Cubase Project .cps Raster Image Corel Photo House File .cpt Misc Pocket Slides Presentation .cpt Encoded Ccrypt Encrypted Archive .cpt Audio DTS Compact Audio File .cpt Compressed Compact Pro Archive .cpt Image Corel Photo-Paint Document .cpx Raster Image Corel CMX Compressed File .cpx Settings Oracle ADF Binding Context File .cpx Game Rise of Rome Campaign File .cpy Page Layout eCopy Desktop File .cr2 3D Image Poser Character Rigging File .cr2 Raster Image Canon Raw Image File .crash System Mac OS X Crash Log File .crc Misc Total Commander Checksum File .crd Text Guitar Tabs .crd Data Windows Cardfile .crt Web Security Certificate .crtx Data Office 2007 Chart Template File .crw Raster Image Canon Raw CIFF Image File .crwl Text Windows Crawl File .crx Plugin Chrome Extension .crz 3D Image Compressed Poser Character Rigging File .cs Developer C Sharp Source Code File .cs Game CLEO Custom Script .csa Data PNA Code Calset File .csd Page Layout Compact Shared Document .csf Raster Image Content Secure Format .csf Settings Photoshop Color Settings .csh Executable C Shell Script .csh Misc Photoshop Custom Shapes File .csh Audio Cubase Waveform File .csi Developer ContentServ Include File .csi Developer EdLog Program Data File .csm 3D Image Character Studio Marker File .cso Disk Compressed ISO Disk Image .csp Web Concept Server Page .csproj Developer Visual Studio C# Project .csr Web Certificate Signing Request File .css Web Cascading Style Sheet .cst Developer ContentServ Template .csv Data Comma Separated Values File .ct Raster Image Scitex Continuous Tone File .ct Game Cheat Engine Cheat Table .ctb Settings AutoCAD Color-Based Plot Style File .ctf Misc AVG Update Control File .ctf Data WhereIsIt Catalog .ctf Misc Content Transformation File .ctg Misc Canon Digital Camera Catalog File .ctl Developer Visual Basic UserControl Object File .ctm Data CrazyTalk Model File .ctm Game Star Wars Republic Commando Map File .ctp Developer CakePHP Template .ctt Data Messenger Contact List .ctx Developer Visual Basic Control Binary File .cty Game SimCity City File .cue Disk CDRWin Cue Sheet .cue Disk Cue Sheet File .cui Settings AutoCAD Custom Workspace File .cur System Windows Cursor .cursorfx Data CursorFX Theme File .curxptheme Data CursorXP Theme File .cut Image Dr. Halo Bitmap Image File .cv5 Vector Image Canvas 5 Drawing File .cva Settings HP Systems Software Manager Information File .cvc Video cVideo .cvd Data ClamAV Virus Definitions File .cvg Vector Image Calamus Vector Graphic File .cvi Vector Image Canvas Image Format .cvi Raster Image CassiniVision Map Image File .cvn Data CineVision Encoding Session .cvs Vector Image Canvas 4 Drawing File .cvx Vector Image Canvas 9 Image File .cwf Settings CorelDRAW Workspace File .cwk Data ClarisWorks Document .cwp Audio Cakewalk SONAR Project .cws Data Claris Works Template .cwz Data Circuit Wizard File .cxt Data Director Protected Cast File .cyi Text Clustify Input File .cyo Data Clustify Output File .cys Data Clustify Summary File .cyw Executable Rbot.CYW Worm File D File Extensions File types with extensions that start with the letter D. Extension File Type File Description .d Developer D Source Code File .d00 Audio OPL2 FM Audio File .d01 Audio OPL2 FM Audio File .d2v Video DVD2AVI File .d3v Video Datel Video File .d64 Disk Commodore 64 Disk Image .d88 Disk Toshiba Pasopia 7 Disk File .da0 Backup Windows Registry Backup File .daa Disk PowerISO Direct-Access-Archive .dae 3D Image Digital Asset Exchange File .daf Data Digital Anchor File .dal Misc Download Accelerator Plus URL List .dal Data DVD-lab Project File .dam Data DeltaMaster Analysis Model .dao Disk Disk at Once CD/DVD Image .dap Web Access Data Access Page .dap Misc Download Accelerator Plus Partial Download .dar Compressed DAR Disk Archive .das Data DeltaMaster Analysis Session .dat Video VCD Video File .dat Misc Exchange E-mail Attachment .dat Data Data File .data Data Analysis Studio Offline Data File .dav Video DVR365 Video File .dax Disk PSP Compressed ISO Disc Image .db Data Database File .db Game X-Ray Engine Database .db Misc Windows Thumbnail Cache .db2 Data dBASE II Database .db3 Data SQLite Database File .dba Backup Palm Datebook Backup File .dbb Settings Skype User Information File .dbc Data FoxPro Database .dbd Data DemoShield Project .dbf Data FoxPro Table .dbf Data Database File .dbg Settings FoxPro Debugger Configuration .dbk Backup dBASE Database Backup .dbk Backup Sony Ericsson Mobile Phone Backup File .dbm Web ColdFusion Server File .dbo Developer DarkBASIC Object .dbt Text Database Text File .dbv Misc Database Variable Field .dbx Data Visual FoxPro Table .dbx Misc Outlook Express E-mail Folder .dc 3D Image DesignCAD Design File .dc1 Misc Bloomba E-mail Message .dc4 Encoded ViaThinkSoft (De)Coder 4 File .dcd Encoded DisCryptor Encrypted Database .dcd 3D Image DesignCAD Drawing .dce Video DriveCam Video .dcf Encoded DisCryptor Encrypted Archive .dcf Disk Disk Copy Fast Disk Image File .dcf Audio DRM Content Format File .dcf Data Document Computation Format .dck Video Resolume Deck File .dcl Data DumpSec Report File .dcm Data DiskCatalogMaker Catalog File .dcm Raster Image DICOM Image File .dcm Audio DCM Audio Module .dcmd Data DiskCatalogMaker Thumbnail-Enabled Catalog .dco Encoded DisCryptor Encrypted Virtual Disk Archive .dcp Developer Delphi Compiled Package .dcr Raster Image Kodak RAW Image File .dcr Web Shockwave Media File .dcs Vector Image Desktop Color Separation File .dct Text FoxPro Database Memo .dct Misc Dictionary File .dct Audio Dictation Audio File .dctmp Misc DC++ Partially Downloaded File .dcu Developer Delphi Compiled Unit .dcx Misc FoxPro Database Index .dcx Raster Image Zsoft Multi-Page Paintbrush File .dcx Page Layout FAXserve Fax Document .dd Compressed DiskDouber Archive .ddat Video DivX Temporary Video File .ddb Raster Image Device Dependent Bitmap .ddc Data DivX Descriptor File .ddcx Data DivX Descriptor 2 File .ddf Settings Diamond Directive File .ddrw Image ClarisDraw Drawing .dds Raster Image DirectDraw Surface .ddt Game Football Manager Keep Player Data File .ddt Data Diagram Designer Template .ddt Audio Jill of the Jungle Music File .deb Compressed Debian Software Package .dec Developer Declaration File .def Developer Module-Definition File .def Developer SmartWare II Data File .dek Executable Eavesdropper Batch File .dek Misc Memorize-It Flashcard Deck .dem Data Digital Elevation Model .dem Game Video Game Demo .des 3D Image Corel Designer File .des Data QuickBooks Forms Template .des 3D Image Pro/DESKTOP CAD File .design Vector Image Microsoft Expression Design Drawing .desklink System Desktop Shortcut .desktop Misc Desktop Entry File .dev Developer Dev-C++ Project File .dev System Windows Device Driver File .dewf Audio SoundEdit Recorded Instrument .dex Developer Dalvik Executable File .dex Data Excel Spreadsheet .dex Data DEXIS Digital X-ray File .df1 Developer Omnis Native Datafile .df2 Audio Defractor 2 Instrument .dfc Audio Defractor Instrument .dff 3D Image RenderWare Model File .dfm Developer Delphi Form .dfm Data Midas ViewPoint Display Form .dfont Font Mac OS X Data Fork Font .dfp Plugin Fusion Plugin File .dfproj Data DVD Flick Project .dft Data Solid Edge Draft Document .dfx 3D Image Drafix CAD File .dgb Data FlashCAD Drawing Database .dgc Compressed DGCA File Archive .dgc Misc TurboTax Tax Form .dgn Vector Image MicroStation Design File .dgs Text Dagesh Pro Document .dhtml Web Dynamic HTML file .dib Raster Image Device Independent Bitmap File .dic Misc Dictionary File .dicproof Settings Microsoft Dictionary Proofing File .dif Video Digital Interface Format .dif Data Data Interchange Format .dig Audio Digilink Audio File .dig Audio Sound Designer Audio File .dii Data Summation Batch Load File .dim Encoded DIME File .dime Encoded Direct Internet Message Encapsulation File .dinfo Settings DivX Temporary Video Info File .dir Video Adobe Director Movie .directory Settings KDE Folder View Properties File .disco Web DISCO Discovery Document .discomap Web DISCO Discovery Output File .disk Disk Linux Virtual Hard Disk .diskdefines Misc Linux LiveCD Information File .dist Compressed Mac OS X Distribution Script .divx Video DivX-Encoded Movie File .diz Text Description in Zip File .djm Data Dynojet Map File .djv Raster Image DjVu Image .djvu Raster Image DjVu Image .dke Misc DriveLock FDE Disk Key File .dl Game Zoo Tycoon 2 Data File .dlc Encoded Download Link Container File .dld Executable EdLog Compiled Program .dlg Data Digital Line Graph .dll System Dynamic Link Library .dll Web DLL Dynamic Web Page .dlm Misc Akamai Download Manager File .dlo Plugin 3ds Max Plug-in .dls Audio Downloadable Sounds File .dlv 3D Image CATIA 4 Export File .dm Audio DRM Delivery Message .dm2 Data Toad Data Modeler 2 File .dm2 Game Quake 2 Demo File .dmb Video Digital Multimedia Broadcasting File .dmc Executable Medical Manager Script .dmf Audio Delusion Digital Music File .dmg Disk Mac OS X Disk Image .dml Web DynaScript File .dmo Data Derive Demo .dmo Data Movienizer Database File .dmp System Windows Memory Dump .dms Disk Disk Masher Image .dms Game Dream Maker Script .dmsa Audio Music Disc Creator Project File .dmse Audio Sound Editor Project File .dmsk Data DivX Temporary Video Data File .dmsm Video VideoWave Movie Project File .dmsp Data PhotoSuite Project File .dmss Video VideoWave SlideShow Project File .dm_82 Game Wolfenstein 1.00 Demo Movie File .dm_83 Game Wolfenstein 1.02 Demo Movie File .dm_84 Game Wolfenstein 2.06 Demo Movie File .dna Backup CA Backup and Migration Backup File .dnc Video Windows Dancer File .dnc Data Dance Database File .dne Text Netica Text File .dng Raster Image Digital Negative Image File .dnl Misc DNAML eBook File .do Web Java Servlet .dob Developer Visual Basic UserDocument .doc Text Word Document .doc Text WordPad Document .dockzip Data ObjectDock File .docm Text Word Open XML Macro-Enabled Document .docx Text Word Open XML Document .dol Game Gamecube Executable File .dolphinview Settings Dolphin Folder View Settings File .dot Page Layout Word Document Template .dotm Text Word Open XML Macro-Enabled Document Template .dotx Text Word Open XML Document Template .dov Backup Temp File .download Web Partially Downloaded File .downloadhost Settings MSN Download Settings File .dox Text MultiMate Document .dox Developer Doxygen Documentation File .dox Developer Visual Basic Binary UserDocument .dp1 Data DataPower Database File .dpb Misc FaxMaster Document .dpd Page Layout Ovation Pro File .dpg Video Nintendo DS Movie File .dpk Developer Delphi Package .dpl Developer Delphi Package Library .dpm Plugin Pro Tools Plugin File .dpn Data Depiction Data File .dpp Vector Image DrawPlus Drawing File .dpr Vector Image Digital InterPlot File .dpr Developer Delphi Project .dps Settings DivX Player 2 Skin File .dpx Data VASCO DIGIPASS File .dpx Raster Image Digital Picture Exchange File .dqy Misc Excel Query File .dr Misc DRM Rights Object .drc Misc DRM Rights Object .dream Video Dream Animated Wallpaper File .drg Audio I-Doser Audio Drug File .drl Data Gerber Drill Rack File .drm Settings Cubase Drum Map File .drv System Device Driver .drw Vector Image DESIGNER Drawing .drw Vector Image Drawing File .drwdot Vector Image SolidWorks Drawing Template .ds Executable TWAIN Data Source .dsb Data Orchida Embroidery File .dsc Misc CoolPix Disk Identification File .dsd Data Diet Studio Data File .dsf Audio Delusion Digital Sound File .dsf Vector Image Designer File .dsk Disk Disk Image .dsk Developer Borland Project Desktop File .dsk Data Simple IDs Database .dskin Misc DockX Skin .dsm Audio Digital Sound Module .dsn Settings Database Source Name File .dsp Audio Dynamic Studio Professional Module .dsp Developer Developer Studio Project .dss Audio Digital Speech Standard File .dss System DCC Active Designer File .dst Misc Embroidery Format .dstudio Misc DownloadStudio Incomplete Download .dsv Text DeSmuME Save File .dsw Settings Visual C++ Workspace File .dsy Data Directory Synchronizer Project File .dsy Video Besta Video File .dsym Developer Xcode Debug Symbols File .dsz Data Orchida (OES) Embroidery File .ds_store Settings Mac OS X Folder Settings File .dt0 Data DTED Level 0 File .dt1 Data DTED Level 1 File .dt2 Raster Image Windows Live Messenger Emoticon Image File .dt2 Data DTED Level 2 File .dta Data Chain Engineering Database .dtd Developer Document Type Definition File .dtd Data Design Tools Draw File .dtm Audio DigiTrakker Module .dtp Page Layout Publish-iT Document .dtr Data DATroniC Data Recording .dts Audio DTS Encoded Audio File .dtshd Audio DTS-HD Master Audio File .dtw Raster Image Desktop Wallpaper .dt_ Misc Macintosh Data Fork .dus Misc Readiris Font Dictionary .dv Video Digital Video File .dvd System DOS Device Driver .dvd Disk CloneCD DVD Information File .dvdproj Data iDVD Project File .dvf Audio Sony Digital Voice File .dvi Text Device Independent Format File .dvl Raster Image Virtual Library File .dvo Data Cook'n Cookbook File .dvr-ms Video Microsoft Digital Video Recording .dvx Video DivX Video File .dwc Misc Emulex DWC Firmware Update File .dwd Audio DiamondWare Digital Audio File .dwf 3D Image Design Web Format File .dwfx 3D Image Design Web Format XPS File .dwg 3D Image AutoCAD Drawing Database File .dwi Data Dance With Intensity Song File .dwn Misc Firmware Update File .dwp Data DarkWave Studio Project File .dwt Web Dreamweaver Web Page Template .dwz Data Ulead DVD MovieFactory Project File .dx Text DEC WPS Plus File .dxb Vector Image Drawing Exchange Binary .dxf 3D Image Drawing Exchange Format File .dxp Settings CDBurnerXP Data Disc Compilation File .dxr Video Protected Macromedia Director Movie .dxs Game Deus Ex Saved Game .dyc System Xerox Printer Driver Configuration File .dylib Developer Mach-O Dynamic Library E File Extensions File types with extensions that start with the letter E. Extension File Type File Description .e00 Data ArcInfo Coverage Export File .e4a Encoded Encrypt4all Archive .eap Data Enterprise Architect Project .ear Audio Eyemail Audio Recording .ebm Executable EXTRA! Basic Macro .ebn Misc Philips Firmware Update File .ebuild Data Portage eBuild Script .ec0 Data MetroCount Traffic Data File .ece Web Escenic Dynamic Web Page .ecf Plugin Outlook Add-in .ecf Executable SageCRM Component File .eco Data ECCO Database File .ecs Compressed Sony Ericsson Phone Backup File .ecx Data ECCO Corrupted Database File .eda Disk Ensoniq ASR Disk Image .edb Data Exchange Information Store Database .ede Disk Ensoniq EPS Disk Image .edf Data Estimator Data File .edf Data ESRF Data File .edfx Data Estimator.NET Estimate File .edk Disk Ensoniq KT Disk Image .edq Disk Ensoniq SQ1/SQ2/KS32 Disk Image .edrw 3D Image SolidWorks eDrawings File .eds Disk Ensoniq SQ-80 Disk Image .edv Disk Ensoniq VFX-SD Disk Image .eep Data EEPROM Data File .efa Audio Ensoniq ASR File .efe Audio Ensoniq EPS File .efk Audio Ensoniq KT File .efl Misc External Format Language File .efl Encoded Encryptafile Encrypted File .efq Audio Ensoniq SQ1/SQ2/KS-32 File .efr Encoded Encryptafile Private Key File .efs Audio Ensoniq SQ-80 File .eftx Settings Office 2007 Theme Effect File .efu Encoded Encryptafile Public Key File .efv Audio Ensoniq VFX-SD File .efw Compressed Renamed Zip or Executable File .efx Data eFax Document .egg 3D Image Panda3D Model File .egm Game Enigmo Custom Game File .egp Data Easy Grade Pro Gradebook File .eix Game Metin2 Game Data File .elf Game PlayStation 2 Game Data .elf Executable Playstation Executable File .elf Executable Nintendo Wii Game File .email Text Outlook Express Email Message .emb Data Embroidery Design File .emb Data Everest Embedded Bank File .emd Audio ABT Extended Module .emd Data ChessBase Tablebase .emerald System Emerald Theme .emf Vector Image Enhanced Windows Metafile .eml Misc Outlook Express Saved Mail Message .emlx Text Mail Message .emlxpart Data Mail Message Attachment .emp Audio eMusic Playlist File .emulecollection Text eMule Data File .emx Audio eMusic Download File .emz Image Windows Compressed Enhanced Metafile .enc Page Layout Copysafe Protected PDF File .enc Encoded Encoded File .enc Data Electronic Navigation Chart File .eng Game Chess Engine .ent Developer External Entity .env Settings WordPerfect Environment .enw Data EndNote Citation File .eot Font Embedded OpenType Font .epf Data Edgecam Educational Part File .epi Compressed EclipsePackager2000 Compressed File .epibrw Web Web File Location .epk Game Metin2 Game Data Package .epp Text EditPad Pro Project .epp Data TalaPhoto Project .epp Data Efficient PPC Project File .eps Vector Image Encapsulated PostScript File .epsf Vector Image Encapsulated PostScript Format File .epub Data Open eBook File .epw Data EnergyPlus Weather Data File .eqf Settings Winamp Equalizer Preset File .eql Developer Embedded SQL File .eql Settings MathType Settings .eqn Misc WordPerfect Equation .eqp Settings MathType Preferences .er1 Data ERWin Entity Relationship Diagram .erb Game Evil Genius Resource File .erf Raster Image Epson RAW File .err Text FoxPro Compilation Error .err Text Error Log File .es Executable SageCRM Script File .esg Game Enigmo Saved Game File .esh Executable Extended Shell Batch File .esp Data ACD/Labs Dataset .esproj Web Espresso Project File .esps Audio ESPS Sampled Data File .ess Data EasySpreadsheet Spreadsheet .est Data Construction Cost Estimate File .est Data Streets & Trips Map File .esx Data Xactimate Insurance Claims Estimate .et Data Easiteach Lesson File .eta Data Google Earth Placemark File .etd Data Adobe Reader EBX Transfer Data File .etf Text ENIGMA Transportable File .etl Data Microsoft Event Trace Log File .etx Text Structure Enhanced Text (Setext) File .euc Text Extended Unix Code File .eui Disk Ensoniq EPS Compacted Disk Image .eum Settings Enterprise User Monitor Configuration File .ev Data Echoview File .ev3 Settings Everlock Options File .ev3 Data Team Manager Meet Event File .evo Video HD DVD Video File .evt Data Windows Event Viewer Log File .evy Data Envoy File .ex Developer Euphoria Source Code .ex4 Executable MetaTrader Program File .exd Misc Control Information Cache File .exe Executable Windows Executable File .exe Executable PortableApps.com Application .exe4j Settings Exe4j Configuration File .exif Data Exchangeable Image Information File .exopc Executable ExoPC Application .exp Data Export File .exp Settings SonicWALL Preference File .exp Data Aurora Expert Trace File .exp 3D Image CATIA 4 Export File .exs Game Blades of Exile Scenario .ext Misc Norton Commander Extension .exx Data IBM Linkway MsgPut File .eyb Misc Microsoft Encarta Yearbook Update File .eye Video Eyemail Video Recording File .ezs Executable EZ-R Stats Batch Script .ezt Executable EZT Malicious Worm File .ezw Misc easyOFFER Real Estate Form File F File Extensions File types with extensions that start with the letter F. Extension File Type File Description .f Developer Fortran Source Code .f Compressed Freeze Compressed File .f2r Audio Farandoyle Linear Module File .f32 Audio Raw 32-Bit Audio File .f3r Audio Farandoyle Blocked Module File .f4v Video Flash MP4 Video File .f64 Audio Raw 64-Bit Audio File .f90 Developer Fortran 90 Source File .fa Data FASTA Formatted Sequence File .fac Image FACE Graphic .face Image FACE Graphic .fal Raster Image Bitmap Graphic Header Information .faq Text Frequently Asked Questions Document .far Audio Farandole Composer Module .far Game The Sims Archive File .fas Executable Compiled Fast-Load AutoLISP File .fas Executable QuickSilver Fast Save Lisp File .fasta Data FASTA Sequence File .fat Settings Zinf Theme File .fax Raster Image Fax Document .fb2 Text FictionBook 2.0 File .fbc Backup Family Tree Maker for DOS Backup File .fbf Backup Free Backup Fix Backup File .fbk Backup Family Tree Maker for Windows Backup File .fbk Backup Microsoft Dynamics NAV Backup File .fbl Text CADfix Command Level Log File .fbl Data iGO Map File .fbm Image Fuzzy Bitmap .fbp Developer wxFormBuilder Project .fbr Video FlashBack Screen Recording .fbu Backup FEBE Firefox Backup File .fbw Backup HP Recovery Manager Backup File .fbx 3D Image Autodesk FBX Interchange File .fbz Video FlashBack Screen Recorder Movie .fc2 3D Image Poser Face Pose File .fc2map Game Far Cry 2 User Map .fcc Settings Forms Credential Collector File .fcd Vector Image FastCAD DOS Drawing .fcd Disk Virtual CD Format .fcd Data First Choice Database .fcp Video Final Cut Project .fcs Data First Choice Spreadsheet .fcw 3D Image FastCAD Windows Drawing .fcz 3D Image Compressed Poser Face Pose File .fd Developer DataFlex Data File .fd Settings LaTeX Font Definition File .fd2 Page Layout PictureMate Borders File .fdb Data Portfolio Catalog .fdb Data Art Explosion Catalog .fdb Data Microsoft Dynamics NAV Database File .fdd Disk Parallels Desktop Floppy Disk Image File .fdf Text Acrobat Forms Data Format .fdi Disk Amiga Disk Image .fdp Compressed MySafe Encrypted Data .fdr Text Final Draft Document .fdr Misc Windows Error Report File .fds Text Final Draft Secure Copy .fdx Text Final Draft Document .fes Text Fileless Occurrence Placeholder .fev Settings FLAMES Environment Variable File .ff Game Call of Duty 4 Fast File .ffa System Find Fast Status File .ffd Data Flat File Description .fff Audio Gravis UltraSound Sound Bank .ffil Font Mac Font Suitcase .ffl System Find Fast Document List .ffo System Find Fast Document Properties Cache .fft Text Final Form Text File .ffwp Data FormsForWeb Packet .ffx System Microsoft Find Fast Index .fgd Game Forge Game Data File .fgl Developer Fifth Generation Language Source File .fh10 Vector Image FreeHand 10 Drawing File .fh11 Vector Image FreeHand 11 Drawing File .fh7 Vector Image FreeHand 7 Drawing File .fh8 Vector Image FreeHand 8 Drawing File .fh9 Vector Image FreeHand 9 Drawing File .fhc Data FHC Data File .fhd Image FreeHand Drawing File .fic Developer WINDEV Hyper File Database .fid Data File Expander Engine Descriptions Database .fif Vector Image Fractal Image File .fig Vector Image Xfig Drawing .fil Raster Image Symbian Application Logo File .fil Data Files List Object File .file Misc Generic Windows File .fits Image Flexible Image Transport System .fky Executable FoxPro Macro .fl Game Freelancer Saved Game File .fla Developer Adobe Flash Animation .flac Audio Free Lossless Audio Codec File .flame Data Fractal Flame File .flc Video FLIC Animation .flf Misc Microsoft Dynamics NAV License File .flh Video FLIC Animation File .fli Video FLIC Animation .fll Data FoxPro Dynamic-Link Library .flo Data iGrafx FlowCharter File .flo Data RFFlow Flowchart File .flp Audio FruityLoops Project .flp Misc Flash Project .flp Disk Floppy Disk Image .flp Data Activprimary Flipchart File .flr Text Flare Decompiled ActionScript File .fls Misc ArcView GIS Windows Help Supporting File .fls Audio Flash Lite Sound Bundle .flt Data Flight Simulator Saved Flight .flt Plugin Adobe Audition Filter .flt Plugin Image Filter .flv Video Flash Video File .flx 3D Image FelixCAD Drawing .flx Video FLIC Animation .fm Data FileMaker Spreadsheet .fm Page Layout FrameMaker Document .fm5 Data FileMaker 5 Database .fml Game WWE RAW Character File .fmp Web 123 Flash Menu Project .fmp Data FileMaker Pro Database .fmt Settings FoxPro Format File .fmv Vector Image Frame Vector Metafile .fmx Plugin FileMaker Plug-in .fnc Settings Frogans Player Network Certificate .fnc Misc QuickCAM 3D CNC File .fnt Font Windows Font File .fnta Game Aleph One Font File .fo Data XSL-FO Form .fob Data Dynamics NAV Object Container File .fol Data PFS First Choice Database File .fon Font Generic Font File .fop Data InfoZoom Protected Data File .for Developer Fortran 77 Source File .forge Game Assassin's Creed Game Data File .fox Data InfoZoom Data File .fp Data FileMaker Pro Spreadsheet .fp3 3D Image FloorPlan 3D Design File .fp3 Data FileMaker Pro 3 Database .fp4 Data FileMaker Pro 4 Database .fp5 Data FileMaker Pro 5 Database .fp7 Data FileMaker Pro 7+ Database .fpa Developer Front Panel Encrypted Order File .fpbf System Mac OS X Burn Folder .fpd Developer Front Panel Order File .fpe 3D Image FPS Creator Entity File .fpenc Encoded FileProtect Encrypted File .fpf 3D Image IKEA Home Planner File .fpfv Misc File Protected From Virus .fpg Game FPS Creator Game Project File .fpi Executable FPS Creator Intelligence Script .fpid Game FPS Creator AI Wizard Data File .fpk Misc JetForm FormFlow File .fpm Game FPS Creator Map File .fpm Developer FPS Creator Map File .fpmb Game FPS Creator Mab Buffer File .fpmo Game FPS Creator Map Overlay File .fpp Developer Front Panel Project .fpp Game FPS Creator Prefab File .fpp Developer Fortran Source Code .fps Game FPS Creator Segment File .fpsl Data FileMaker Pro Snapshot Link .fpt Text FileMaker Pro Database Memo File .fpt Text FoxPro Table Memo .fpx Raster Image FlashPix Bitmap Image File .framework Developer Mac OS X Application Framework .frc Game FS Recorder File .frk Misc Macintosh Resource or Data Fork .frl Data Electronic Form Loader .frm Data ADL Form .frm Developer Visual Basic Text Form .frm Misc Form File .frm Data MySQL Database Format File .fro Data dBASE IV Compiled Report .frs Executable Flash Renamer Script .frt Text FoxPro Report Memo .frx Developer Visual Basic Binary Form .frx Data FoxPro Report .frz Misc Locked FormFlow File .frz Game Snes9x Saved State .fs Image FlexiSIGN Document .fs Plugin Mac OS X File System Plug-in .fs2 Game FreeSpace 2 Saved Mission File .fsb Data FMOD Sample Bank File .fsc Data Practical Scriptwriter File .fsg Game FreeCol Saved Game File .fsm Game FreeSpace Mission File .fsm Audio Farandole Composer WaveSample File .fsm Encoded Splitty Master Split File .fsproj Developer FireStarter Project File .fss Encoded Splitty Data Split File .fst Game Crazy Machines 2 Object File .ft Settings Edgecam Feature Template .ft10 Vector Image FreeHand 10 Drawing Template .ft11 Vector Image FreeHand 11 Drawing Template .ft7 Vector Image FreeHand 7 Drawing Template .ft8 Vector Image FreeHand 8 Template .ft9 Vector Image FreeHand 9 Drawing Template .ftg System Full Text Group .ftil Misc e-Hastakshar Contract Note .ftm Data Family Tree Maker for DOS File .ftploc Misc FTP Location .fts System Full Text Search .ftw Data Family Tree Maker File .ful Backup Microsoft Backup File List .fw Misc Firmware Update File .fwt Settings FacetWin Configuration File .fx 3D Image Direct3D Effects File .fxb Plugin VST Audio Plug-in .fxc Text FilePackager Configuration .fxg Vector Image Flash XML Graphics File .fxm Page Layout WinFax Document .fxp Plugin VST Audio Plug-in .fxp Executable FoxPro Compiled Source .fxt Plugin Finale Plug-in .fzb Audio Casio FZ-1 Bank Dump .fzf Audio Casio FZ-1 Full Dump .fzip Plugin Foxit Reader Add-on .fzv Audio Casio FZ-1 Voice Dump G File Extensions File types with extensions that start with the letter G. Extension File Type File Description .g 3D Image BRL-CAD Geometry File .g3x Game RealFlight Content File .g721 Audio G.721 Audio File .g723 Audio G.723 Audio File .g726 Audio G.726 Audio File .gadget Executable Windows Gadget .gam Game Saved Game File .game Game Apple Chess Saved Game .gan Data GanttProject Project File .gau Misc Flight Simulator Gauge File .gb Game Game Boy ROM File .gb1 Backup Game Maker Backup File .gba Game Game Boy Advance ROM .gbc Game Game Boy Color ROM .gbi Disk gBurner Project File .gbr Data Gerber File .gbx Game Nadeo Game File .gbx Misc Gerber PCB File .gc Data GraphClick File .gca Compressed GCA File Archive .gcd Vector Image Generic CADD Drawing File .gcd Disk Prassi CD Image .gcf Game Game Cache File .gci Game GameCube Save File .gcm Game Game Cube ROM .gcs Game GameCube SharkSave File .gcx Data Grapher Graph File .gdb Data InterBase Database File .gdr Font Symbian OS Font File .gds Image Graphic Design System .ged Developer Game Editor Project File .ged Data GEDCOM Genealogy Data File .gedcom Data GEDCOM Genealogy File .gem Developer RubyGems Package .gem Page Layout Ventura Publisher Document .gem Vector Image GEM Metafile .gen Data ArcView ARC/INFO UnGenerate file .geo 3D Image VRML Geography File .gfb Raster Image GIFBlast Compressed Image File .gg Misc Google Desktop Gadget File .ggb Data GeoGebra Document .gho Backup Norton Ghost Backup File .ghs Backup Norton Ghost Image Segment .gi Disk Global Image .gi Disk RecordNow! CD Image .gid Settings Windows Help Index File .gif Raster Image Graphical Interchange Format File .gig Audio Tascam GigaSampler File .gim Raster Image PlayStation Portable Image File .gin Settings GEMS Engine Control Unit File .gio Text Adagio Score .gio Text Nyquist MIDI File .gkh Disk Ensoniq EPS Family Disk Image .gks Image Graphics Kernel System .gl Video GRASP Animation .glade Developer Glade Project File .global Developer Global Makefile .gls Developer GLScript Game Script .gly Misc Word Glossary File .gm6 Developer Game Maker 6 Project File .gmd Developer Game Maker Program Code .gmf Image Geology Multi-File .gmk Developer Game Maker 7 File .gml Developer Game Maker Language File .gml Data Geography Markup Language File .gmo Developer GNU Machine Object File .gmres Game Game Maker Resource File .gms Data Gesture and Motion Signal File .gmv Game Gens Game Recording .gne Web Flickr Web Page .gno Data GenoPro Genealogy Tree File .gnp Data GNPeak Output File .gorm Developer Gorm Interface Resource File .gp3 Data Guitar Pro 3 File .gp4 Misc CCITT Group 4 Fax File .gp4 Misc Guitar Pro 4 Tablature .gp5 Audio Guitar Pro 5 Tablature File .gpd Raster Image Graphic PhotoDefiner Image File .gpe Executable GP2X Video Game .gpg Misc GNU Privacy Guard Public Keyring .gpi Data Garmin Point of Interest File .gpk Audio WaveLab Audio Peak File .gpn Text GlidePlan Map Document .gps Data Survey Pro Coordinate File .gps Settings GenePix Settings File .gpu Executable GP2X Utility Program .gpx Data GPS Exchange File .gr2 Game Granny 3D File .gra Data Microsoft Graph File .grade Data GradeStat Document .graffle Image OmniGraffle Drawing .grasp Video GRASP Animation .grd Settings Photoshop Gradient File .grf Game Ragnarok Client Archive .grf Data Generic Graph File .grf Data DPlot Graph File .grib Data Gridded Binary File .grk Data Gradekeeper Class Gradebook File .grl System Windows Update Status File .grn 3D Image Granny 3D File .gro Raster Image Graphic Object Bitmap .grob Raster Image Graphic Object Bitmap File .growlregdict Misc Growl Temp File .growlticket Settings Growl Notification File .grp Game StarCraft Graphics Group File .grp System Windows Program Manager Group .grr Data Gradekeeper Class Roster File .grv Data Office Groove File .gry Image Grayscale Image .gs Data GemStone Document .gs3 Developer GameStarter File .gsd Text Generic Station Description File .gsd Vector Image Graphtec Vector Graphics File .gsm Audio Global System for Mobile Audio File .gsm 3D Image Graphic Description Language File .gsm Audio US Robotics GSM Audio File .gsp Web IMail Error Message File .gsp Misc Geometer's Sketchpad File .gst Data MapInfo Geoset File .gthr Text Gather Log File .gtp Data Guitar Pro File .gtp Settings GNOME Theme Package File .gts Video CaptiveWorks PVR Video File .gv Text GraphcViz DOT File .gvi Video Google Video File .gvp Video Google Video Pointer .gwi Settings GroupWise Database Shortcut File .gwk Data GraphiCode PCB Job File .gwp Data Greetings Workshop Project File .gws Settings GeoMedia GeoWorkspace File .gxc Vector Image General CADD Pro Component .gxd Vector Image General CADD Pro Drawing .gxl Data Graph Exchange Language File .gxt Settings Grand Theft Auto Text File .gz Compressed Gnu Zipped Archive .gzi Compressed Unix Gzip File .gzip Compressed Gnu Zipped File H File Extensions File types with extensions that start with the letter H. Extension File Type File Description .h Developer C++ or Java Header File .h1q Misc Microsoft Help Merged Query Index File .h3m Game Heroes 3 Map File .h4r Game Heroes of Might and Magic IV Data File .ha Compressed HA Compressed Archive .hal Developer HansaWorld Application Language File .ham Game Descent 2 Resource File .has Developer Haskell Script .hbc Compressed HyperBac Compressed Archive .hbc2 Compressed HyperBac Compressed File Archive .hbe Compressed HyperBac Compressed and Encrypted Archive .hbx Encoded BinHex Encoded File .hcc Data HydroCAD Prefab Chamber Data File .hce Data HydroCAD Hydrograph Data File .hci Data HydroCAD IDF Data File .hcp Data HydroCAD Project File .hcr Data HydroCAD Rainfall Curve Data File .hcr Page Layout Half-Fold Card File .hcu Data Hydrograph Units Definitons File .hcx Image ChartXL Chart .hd2 3D Image Poser Hand Pose File .hda Data HotDocs Auto-Assemble File .hdb Data HansaWorld Database File .hdd Disk Parallels Desktop Hard Disk File .hdf Data Hierarchical Data Format File .hdi Data HotDocs Auto-Install File .hdl Data HotDocs Library .hdm Web HDML File .hdml Web Handheld Device Markup Language File .hdmov Video QuickTime HD Movie File .hdmp System Windows Heap Dump .hdp Raster Image HD Photo File .hdr Raster Image High Dynamic Range Image File .hdz 3D Image Compressed Poser Hand Pose File .hex Misc Hexadecimal Source File .hex Encoded BinHex Encoded File .hf Image HF Image .hgl Misc HP Graphics Language File .hh Developer C++ Header File .hhc System HTML Help Table of Contents .hhh Developer Power C Precompiled Header File .hhk System HTML Help Index .hhsl Game Hockey High Score List File .hht Text Help and Support Center HHT File .hid Settings Sony Ericsson Remote Settings File .hif Data Quicken Online File .hip Image Houdini Project File .hipnc Image Houdini Apprentice File .his Misc FindinSite Database Definition File .hit Game The Sims Sound File .hki Compressed WinHKI Archive .hki1 Compressed WinHKI HKI1 Archive .hki2 Compressed WinHKI HKI2 Archive .hki3 Compressed WinHKI HKI3 Archive .hkm Video Havok Movie File .hl Data HeuristicLab Storage File .hlb Misc VMS / VAX Help Library .hlp System Windows Help File .hlx Misc ATI Radeon Video Driver Support File .hm3 Misc Help & Manual 3 Project .hma Audio Sony HI-MD Audio File .hme Settings Windows Mobile Theme File .hmk Page Layout Hallmark Card Studio File .hml Data HostMonitor TestList File .hms Executable HostMonitor Script File .hmt Data HighMAT File .hmx Misc Help & Manual 4 Project .hog Game Descent Mission File .hot Game The Sims Sound File .hpf Developer High Performance Fortran File .hpf Executable HP9100A Program File .hpg Vector Image HPGL Plot File .hpgl Vector Image HP Graphics Language Plotter File .hpi Raster Image Hemera Photo Objects Image File .hpj System Help Project File .hpk Compressed HPack Compressed Archive .hpl Vector Image HP-GL Plotter File .hpp Developer C++Builder Header File .hqx Encoded BinHex 4.0 Encoded File .hr Image TRS-80 Graphic .hr2 3D Image Poser Hair File .hrf Image Hitachi Raster Format .hrz 3D Image Compressed Poser Hair File .hs Text Java HelpSet File .hs Developer Haskell Script .hs Misc Motorola Flash Flex File .hs2 Data HyperRESEARCH 2 Study File .hsk Data Huskey Truss & Building Supply Import File .hst Data History File .hta Executable HTML Application .htaccess Web Apache HTACCESS File .htc Text HTML Component File .htg Data HackTheGame Mission Pack .htm Web Hypertext Markup Language File .html Web Hypertext Markup Language File .htt System Hypertext Template File .htx Web HTML Extension File .htz4 Page Layout HyperMaker Publication .huh Data HydroCAD Unit Hydrograph Definitions File .hus Misc Husqvarna Embroidery File .hwp Text Hangul (Korean) Text Document .hxm Game Descent 2 Resource Modification .hxs Web Help 2 Compiled Help File .hyp Compressed HYPER Compressed Archive .hyv Data Team Manager Meet Event File .hz Text Chinese (Hanzi) Text I File Extensions File types with extensions that start with the letter I. Extension File Type File Description .i Developer INTERCAL Source File .i00 Disk DVD Shrink Part 1 File .i01 Disk DVD Shrink Part 2 File .i02 Disk DVD Shrink Part 3 File .i5z Data IUCLID 5 Import/Export File .iaf Settings Microsoft Outlook Settings File .iam 3D Image Inventor Assembly File .ib Data InterBase Database .ibp Disk IsoBuster Managed Image Information File .ibq Disk IsoBuster Managed Image File .ibt Game Texture and Model File .ic1 Image Low Resolution Imagic Graphic .ic2 Image Medium Resolution Imagic Graphic .ic3 Image High Resolution Imagic Graphic .ica Settings Citrix ICA File .ica Image Image Object Content Architecture (IOCA) File .icap Page Layout InCopy Package File .icb Image Targa ICB Bitmap Image .icc Settings ICC Profile .icd Executable SafeDisc Encrypted Program .icd Settings Installable Client Driver File .ice Compressed ICE File Archive .icl System Windows Icon Library File .icm Settings Image Color Matching Profile .icma Misc InCopy Assignment File .icml Page Layout InCopy Document .icn Raster Image Windows Icon File .icns System Mac OS X Icon Resource File .ico System Icon File .icon Raster Image Icon Image File .iconpackage Settings IconPackager Theme File .icontainer Misc CandyBar iContainer File .ics Audio IC Recorder Sound File .ics Data iCalendar File .ics 3D Image IronCAD 3D Drawing File .id Misc Lotus Notes User ID File .id2 Data Windows Live Messenger Emoticon File .idap Page Layout InDesign Assignment Package .idb Developer Visual Studio Intermediate Debug File .idc Web Internet Database Connector File .idf Settings MIDI Instrument Definition File .idlk Misc InDesign Lock File .idml Page Layout InDesign Markup Language File .idms Page Layout InDesign Snippet .idw Image Inventor Drawing .idx Data Navigation POI File .idx Data HMI Historical Log Index File .idx System Index File .idx Text Outlook Express Mailbox Index File .idx0 Game Runescape Cache Index File .idx255 Game Runescape Cache File .ies Data IES Photometric Data File .ifc 3D Image Industry Foundation Classes File .iff Image Amiga IFF Graphic .iff Audio Interchange File Format .ifo Video DVD-Video Disc Information File .igc Data Anime List Builder Input File .iges 3D Image IGES File .igr Settings Quest3D Channel Group Layout File .igs 3D Image IGES Drawing File .ihw Settings IN-HEH Timeline Workspace .ihx Data IN-HEH Timeline Database .ii Data Axialis IconWorkshop Extended Information File .iif Data Intuit Interchange Format File .iil Text CleanSweep Installation Log .iim Executable iMacro Macro File .iip Settings ThinAnywhere Configuration File .iip Settings Install Creator Pro Settings File .iit Settings Install Creator Settings File .iix Misc Translation Memory Index File .ilbm Image Deluxe Paint Graphic .ildoc Page Layout QuickSilver Document .ima Disk Disk Image .image Disk Apple Disk Image .imapmbox Text IMAP Mailbox .imf Audio Id Music File .img Disk CloneCD Disk Image Data File .img Data Garmin Map File .img Raster Image GEM Image .img Disk Macintosh Disk Image .imga Game Aleph One Image File .imj Raster Image JFIF Bitmap Image .iml Developer IntelliJ IDEA Module .iml Misc ACT! Internet Mail Message .imovieproj Video iMovie Project File .imovieproject Video iMovie Project .imp Audio Audition Impulse File .imt Data My Time Data File .imy Misc iMelody Ringtone File .in Misc Spyware File .inc Developer Include File .inca Misc InCopy CS3 Assignment File .incp Data InCopy CS3 Package File .inct Page Layout InCopy Template .incx Page Layout InCopy CS3 Interchange File .ind Page Layout InDesign Document .ind Misc Memory Stick Formatting File .indd Page Layout Adobe InDesign File .indl Page Layout InDesign Library .indp Page Layout InDesign CS3 Package File .inds Page Layout InDesign Snippet File .indt Page Layout InDesign Template .inetloc Misc Internet Location .inf Settings Setup File or Installer Script .info Raster Image ZoomBrowser Image Index File .ing Misc MasterCook Ingredients File .ini Settings Gravis UltraSound Bank Setup File .ini Settings Windows Initialization File .ini Settings Symbian OS Configuration File .ink Raster Image Pantone Reference File .ink Vector Image Pocket PC Handwritten Note .ink Data Mimio Ink Data File .inm Misc FaxMaster Document .inp Data ABAQUS Input File .ins Audio Ensoniq Instrument .ins Audio Sample Cell II Instrument Definition File .ins Data Inspiration File .ins System Internet Naming Service File .int Raster Image SGI Integer Image .inx Page Layout InDesign Interchange File .inx Executable Compiled Script .ion System 4DOS File Description .ip Data IconPackager Theme File .ipa Executable iPhone or iPod Touch Application .ipd Backup BlackBerry Backup File .ipf Disk Interchangeable Preservation File .ipf Text OS/2 Help File .ipf Executable SMS Installer Script .ipg Compressed iPod Game File .ipk Compressed Itsy Package .ipp Developer Inline Guard Macro File .ipr Developer InstallShield Professional Project File .iproject Data iClone Project File .ips Game Internal Patching System Patch File .ipsw Misc iPod and iPhone Software Update File .ipt 3D Image Inventor Part File .iptheme Settings IconPackager Raw Theme File .ipx Raster Image IPIX Image .iqy Web Internet Query .irock Data intelliRock Sensor Data File .irp Data Internet Researcher Project File .irr Data Brewer Lamp File .irx Data Brewer Irradiation File .isc Developer Xilinx Device Configuration File .isd Page Layout Flexera InstallShield Dialog Box File .ise Developer InstallShield Express Project File .isf Data Inspiration Flowchart Document .ish Compressed ISH Compressed Archive .ism Developer InstallShield Project File .isn Misc Installer Source Files .iso Disk Disc Image File .isp Settings IIS Internet Service Provider Settings .isr Game GoMoku Game File .iss Settings Inno Setup Script .iss Settings InstallShield Silent Response File .ist Developer InstallShield Project Template File .isu Executable InstallShield Uninstaller Script .isz Disk Zipped ISO Disk Image .it Audio Impulse Tracker Module .ita Compressed IconTweaker Theme Archive .itc Misc iTunes Cover Flow Data File .itc2 Raster Image iTunes Cover Flow Data File 2 .itdb Data iTunes Database File .ithmb Image iPod Photo Thumbnails .iti Audio Impulse Tracker Instrument .itl Data iTunes Library File .itm Data iThink Model File .itn Data TomTom Navigator Itinerary File .its Audio Impulse Tracker Sample .its System Internet Document Set .itt Settings IconTweaker Theme File .itw Data InTouch With Database File .itx Data ITX Form Template .iv 3D Image Open Inventor Scene Graph File .iv2i Backup Norton Ghost Incremental Virtual Volume Image .iva Misc Dementia.4207 Virus File .iva Video Surveillance Video File .ivf Video Indeo Video Format File .ivr Video Internet Video Recording .ivr Image Image World .ivs Video Internet Streaming Video .ivt Data Beyond 20/20 Table .ivt Game International Volleyball 2006 Data File .iw Data Chain Engineering Database File .iwd Game Call of Duty Game Data File .iws Developer IntelliJ IDEA Web Page .iws Misc InstallWatch Scan File .iwz Developer InstallShield Express 2 Project File .ix Settings dtSearch Index File .ixa Disk Ulead Disc Image format .ixb Data Ulead Disc Image .izz Video Isadora Media Control Project .izzy Video Isadora Project J File Extensions File types with extensions that start with the letter J. Extension File Type File Description .j Raster Image JPEG Image .j Compressed JAR Archive .j Developer Java Source File .j2c Raster Image JPEG 2000 Code Stream .j2i Game Jazz 2 Internet Link File .j2k Raster Image JPEG 2000 Image .j2l Game Jazz Jackrabbit 2 Level File .jad Misc Java Application Descriptor File .jam Audio JAM Musical Score .jam Game PS3 Unreal Tournament 3 Mod File .jar Executable Java Archive File .jar.pack Compressed Pack200 Packed Jar File .jas Raster Image Paint Shop Pro Compressed Graphic .jasper Data JasperReports Data File .jav Developer Java Source File .java Developer Java Source Code File .jbf Image Paint Shop Pro Browser Cache .jbig Image Joint Bi-level Image Group File .jbk Backup Juno Backup File .jbr Raster Image Paint Shop Pro Brushes File .jc Misc FlashGet Partial Download .jc! Misc FlashGet Incomplete Download .jcz Web Liquid Motion Animation .jdb Data Symantec Endpoint Protection Update File .jed Developer Xilinx JEDEC Programming File .jef Data Janome Embroidery Format .jfi Image JPEG File Interchange .jfif Raster Image JPEG File Interchange Format .jfsl Developer Flash JavaScript File .jg4 Game BigJig Jigsaw Puzzle .jgz Compressed Gzipped Javascript File .jhtml Web Java HTML Web Page .jia Raster Image Digital Photo Navigator Album .jic Developer JTAG Indirect Configuration File .jic Compressed Java Icon File .jif Raster Image JPEG Image File .jiff Raster Image JPEG Image File Format .jis Text Japanese Industry Standard Text .jmp Data JMP Data File .jng Raster Image JPEG Network Graphic .jnlp Web Java Web Start File .jnt Data Windows Journal File .job Data MetaCAM Nest Job File .joboptions Data Adobe Joboptions File .joined Data HJ-Split Data File .jp1 Text Japanese (Romaji) Text File .jp2 Raster Image JPEG 2000 Core Image File .jpc Raster Image JPEG 2000 Code Stream File .jpd Raster Image Joint PhotoDefiner Image .jpd Developer Java Process Definition .jpe Raster Image JPEG Image .jpeg Raster Image JPEG Image File .jpf Raster Image JPEG 2000 Image .jpg Raster Image JPEG Image File .jph Data JProbe Memory Snapshot .jpr Developer JBuilder Project .jpw Image World File for JPEG .jpx Developer JBuilder Project .jpx Raster Image JPEG 2000 Image File .jrprint Data JasperReports Print File .jrs Misc Exchange Reserve Transaction Log File .jrxml Data JasperReports Layout File .js Web JavaScript File .js Executable JScript Executable Script .jse Executable JScript Encoded File .jsf Settings Project64 Joystick File .json Developer JavaScript Object Notation File .jsp Web Java Server Page .jspa Web Java Servlet Alias .jspx Web XML Java Server Page .jsx Executable ExtendScript Script File .jt 3D Image JT Open CAD File .jtf Raster Image JPEG Tagged Interchange Format .jtp Page Layout Windows Journal Template .jude Data JUDE Project File .jvs Web JavaScript Proxy Autoconfig File .jwl Raster Image Roxio Jewel Case File .jws Settings Java Workspace Settings File .jws Web Java Web Services File .jxr Raster Image JPEG XR Image K File Extensions File types with extensions that start with the letter K. Extension File Type File Description .k25 Audio Kurzweil K2500 File .k26 Audio Kurzweil K2600 File .kap Data BSB Chart Image File .kar Audio Karaoke MIDI File .kb Developer C++ Keyboard Script .kbd System Keyboard Layout Script .kdb Data Keypass Database File .kdc Raster Image Kodak Photo-Enhancer File .kdevdlg Developer KDevelop Dialog Box File .kdevelop Developer KDevelop Project Data File .kdevprj Developer KDevelop Project File .kdk Raster Image Kodak Proprietary Decimated TIFF File .kdmp Developer Windows Crash Dump File .kext System Mac OS X Kernel Extension .key Settings Keyboard Definition File .key System Security Key .key Misc Keynote Presentation .keychain Settings Mac OS X Keychain File .kfx Image Kofax Image File .kgb Compressed KGB Archive File .khd Misc Dynamics AX Kernel Help Data File .khi Misc Dynamics AX Kernel Help Index File .kic Raster Image Kodak Compressed Image File .kid Data Kidspiration Document .kin Audio Kinetic Music Project .kismac Data KisMAC Webservice File .kit Audio Battery Drum Kit File .kit 3D Image 20-20 Design File .kix Executable KiXtart Script File .klg Text Log File .klg Text KOFIA Log .kmc 3D Image Kinemac Animation File .kmcobj 3D Image Kinemac Sprite Object .kml Text Keyhole Markup Language .kmm Plugin K-Meleon Macro Module .kmp Audio Korg Trinity/Triton Keymap File .kmz Data Google Earth Placemark File .knt Text KeyNote Note File .ko System Linux Kernel Module File .kodak Raster Image Kodak Photo CD File .kon Text Yahoo! Widget XML File .koz Audio Audiokoz Music File .koz Audio Bell Music File .kpf Data Komodo Project File .kpg Raster Image Kai's Power Goo Graphic .kpp Data Kid Pix Presentation .kpr Data KPresenter Presentation .kpx Data Kid Pix Picture .kpz Data Komodo Template File .krz Audio Kurzweil K2000 File .ksc Audio Korg Trinity/Triton Script File .ksf Audio Korg Trinity/Triton Sample File .ksh Executable Unix Korn Shell Script .kt2 Audio Battery 2 Drum Kit File .kt3 Audio Battery 3 Drum Kit File .kth Misc Keynote Theme .ktp Audio Kinetic Project Template .kwd Text KWord Document .kwreplay Game Command & Conquer 3 Replay File .kyb Settings Keyboard Layout .kyr Misc Lotus Domino Key Ring File .kys Settings Adobe Photoshop CS Keyboard Shortcut File L File Extensions File types with extensions that start with the letter L. Extension File Type File Description .l Audio Left Audio Channel File .l Data Game of Life File .l6t Data Line 6 Tone File .la Audio Lossless Audio File .lab Page Layout WordPerfect Label Definition File .laccdb Data Microsoft Access Lock File .lang Settings Skype Language File .las Data LIDAR Data Exchange File .lasso Web Lasso Database-Driven Web Page .latex Text LaTeX Document .lay Misc DVD Studio Pro Layout File .lay Settings Rhino 3D Layer State File .lay Settings MAME Layout File .lbc Web Cloaked Affiliate Link Builder Saved Link .lbi Developer Dreamweaver Library Item .lbl Data NiceLabel Template File .lbl Page Layout dBASE Label File .lbm Raster Image Deluxe Paint Bitmap Image .lbr Compressed LU Library Archive .lbs Developer Omnis Library .lbt Text FoxPro Label Memo .lbu Settings Cloaked Affiliate Link Builder Settings File .lbx Data FoxPro Label File .lcb Backup Living Cookbook Backup File .lcd Disk CDSpace Emulated Disk Image .lcd Data ABBYY Language File .lcf Data ArchiCAD Library Container File .lck Misc Program Lock File .lcm Data Lipikar Custom Map File .ldb Misc Microsoft Access Lock File .ldb Game Max Payne Level File .ldf Data SQL Server Transaction Log File .ldif Data LDAP Data Interchange Format File .ldm 3D Image VolumeViz Multi-Resolution Volume File .lds Developer Linux Compile Time Header File .ldw Game Virtual Villagers Saved Game File .lemon Compressed LemonShare.net Download .lex Data Adobe Linguistic Library Data File .lgc Data SimpleK Database File .lgf Data PMSCAN Log File .lgh Data HMI Historical Log File .lgi Data Multimedia Logic File .lgl Data Large Graph Layout Edge File .lgl Game LeechGet Download List .lgo Developer Logo Instructions File .lgp Game Final Fantasy Media Archive .lha Compressed LHARC Compressed Archive .lhs Developer Literate Haskell Script .lib Data Generic Data Library .lic Settings Software License .licenses Developer Visual Studio Licensed Classes File .licx Developer Visual Studio License File .lid Misc Kodak EasyShare Album File .lif Data TurboTax Information Archive .lin Vector Image AutoCAD Linetype File .link Misc iPod Link File .linx Misc iPod Links Folder .lis Developer VAX Program Listing .lis Text SQR Output File .lit Text eBook File .lit Developer Literate Haskell Script .livereg Data Symantec Antivirus Session File .liveupdate Data Symantec LiveUpdate File .lix Data ExtendSim Simulation Software Library .lix Data Logos Library System File .ll Game List & Label Preview File .llb Data LabVIEW Library File .llm 3D Image Linden Lab Mesh File .llx Backup LabVIEW VI Library Backup File .lms Data LenMus Score File .lmu Game RPG Maker Map File .lmx Data Landmark Exchange File .lnd 3D Image 3D Landscape File .lng Plugin Acrobat Language Plug-in .lnk System File Shortcut .lnt Text Laego Note Taker File .lnt Developer PC-lint/FlexeLint Configuration File .lnt Data LiveNote Case File .lnx Disk Atari Lynx ROM .lnx Compressed Commodore 64 Lynx Archive .lo Executable Interleaf Compiled Lisp File 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XML File .ly Data LilyPond File .lyr Misc ArcView Layer File .lyt Text TurboTax Install Log File .lyx Text LyX Document .lz Compressed Lzip Compressed File .lzh Compressed LZH Compressed File .lzm Compressed Slax Module .lzma Compressed LZMA Compressed File .lzo Compressed LZO Compressed File .lzx Compressed Amiga LZX Compressed File M File Extensions File types with extensions that start with the letter M. Extension File Type File Description .m Data Mathematica Input File .m Developer Objective-C Implementation File .m15 Video MPEG Video .m1a Audio MPEG-1 Audio File .m1pg Video iFinish Video Clip .m1v Video MPEG-1 Video File .m2 Game World or Warcraft Model Object .m21 Video AXMEDIS MPEG-21 File .m21 Video MPEG-21 File .m2a Video MPEG-1 Layer 2 Audio File .m2p Plugin Maxthon 2 Browser Plugin File .m2p Video MPEG-2 Program Stream File .m2s Settings Maxthon 2 Browser Skin File .m2t Video HDV Video File .m2ts Video Blu-ray BDAV Video File .m2v Video MPEG-2 Video .m3d 3D Image 3D Model File .m3d 3D Image DIALux 3D Object File .m3g Executable Mobile 3D Graphics Program .m3u Audio Media Playlist File .m4 Developer Macro Processor Library .m4a Audio Apple Lossless Audio File .m4b Audio MPEG-4 Audio Book File .m4e Video MPEG-4 Video File .m4p Audio iTunes Music Store Audio File .m4r Audio iPhone Ringtone File .m4u Video MPEG-4 Playlist .m4v Video iTunes Video File .m75 Video MPEG Video .ma 3D Image Maya Project File .ma1 Audio Monarch Audio File .mab Misc Mozilla Address Book .mac Raster Image MacPaint Image .mad Misc Access Module .maf Misc Microsoft Access Form .mag Image Access Diagram .mag Data Magic Circuit Layout .magik Developer Magik Source Code File .mai Data Microsoft Mail File .mailhost Settings MSN Mailhost Settings File .mak Developer Makefile .mam Misc Microsoft Access Macro .man Text Unix Manual .manifest System Windows Visual Styles File .map Game Half-Life Map File .map Data NAVIGON Map File .map Data Weather Defender Map .map Web Image Map .mapimail System Send To Mail Recipient .maq Misc Microsoft Access Query .mar Misc Microsoft Access Report .mas Misc Access Stored Procedures .masseffectprofile Data Mass Effect Player Profile .masseffectsave Game Mass Effect Saved Game .master Web ASP.NET Master Page .mat Raster Image Vue Material File .mat Data MATLAB MAT-File .mat Misc Microsoft Access Table Shortcut File .mat Plugin V-Ray Materials File .material Settings Rigs of Rods Texture Reference File .mato Game Atomic Combat Saved Game .mau Misc Media Attachment Unit .mav Misc Access View File .maw Misc Access Data Access Page .max Page Layout OmniPage Scanned Document .max 3D Image 3ds Max Scene File .max Raster Image PaperPort Scanned Document .max Game Action Replay Max Save File .mb 3D Image Maya Binary Project File .mbb Data ManaBook Book File .mbbk Page Layout ManaBook Book Kit File .mbf Data Microsoft Money Backup File .mbg Data Microsoft Mailbag .mbg Data Mailbag Assistant Mailbox File .mbi Disk Multi-Bootable Information File .mbl Data Logger Pro Data File .mbm Raster Image Multi Bitmap File .mbox Text E-mail Mailbox File .mbp Data Mobipocket Notes File .mbx Data Outlook Express Mailbox .mc1 Data MedCalc Data File .mc2 Misc MasterCook 5 Cookbook File .mc5 3D Image Poser 5 Material File .mc6 3D Image Poser 6 Material File .mc9 Data Mastercam 9 Geometry File .mcd Data Mathcad Document .mcf Misc MasterCook 2 Cookbook File .mcf Font Watchtower Library Font File .mcfi Misc Maya Initial Fluid Cache File .mcfp Misc Maya Fluid Cache Playback File .mci Misc Media Control Interface .mcl Settings Windows Media Center Link File .mco Misc Live Messenger Winks File .mcr Executable 3ds Max Macroscript File .mcrp Encoded MobyExplorer Encrypted File .mcs Image Mathcad Image .mcx 3D Image MICRO CADAM-X/6000 Model Data File .mcz 3D Image Compressed Poser Material File .md Compressed MDCD Compressed Archive .md Developer Machine Description File .md Data Moneydance Financial Data File .md0 Disk Alcohol Disk Image Segment 1 .md1 Disk GEAR CD/DVD Disc Image .md1 Disk Alcohol Disk Image Segment 2 .md2 Disk Alcohol Disk Image Segment 2 .md2 Game Quake 2 Player Model .md3 Game Quake III 3D Model .md5 Misc MD5 Checksum File .mda Plugin Access Add-in .mdb Data Microsoft Access Database .mdc Data Multi Dimension Cube File .mde Plugin Access Add-in (Compiled) .mde Misc ArchiCAD Educational Version Module File .mdf Misc Translation Memory Data Find File .mdf Data SQL Server Database File .mdf Disk Media Disc Image File .mdf Data Measurement Data Format File .mdi Page Layout Microsoft Document Imaging File .mdl Game Half-Life Model File .mdl Audio DigiTrakker Module .mdl 3D Image Warcraft III 3D Model Text File .mdl Misc Flight Simulator Airplane Model .mdl Data Rational Rose Model File .mdl Data Simulink Model File .mdm Game Mario Dash Map File .mdm Data HLM Multivariate Data Matrix File .mdmp System Windows Minidump .mdn Data Blank Access Database Template .mds Disk Alcohol Disc Image Track Data .mds Disk Media Descriptor File .mdt Data Access Database Template .mdw Misc Access Workgroup File .mdx Data Rational XDE Model File .mdx 3D Image Warcraft III Model File .mdx Data Multiple Index File .mdz Data Access Wizard Template .me Text Readme Text File .me2mod Game Mass Effect 2 Modification File .meb 3D Image PRO100 3D Interior Catalog Element .med Audio Amiga MED Sound File .med Developer RSView Development Project 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Extension .mgc Data MGCSoft Equation Illustrator File .mgf Image Materials and Geometry Format .mgl Game Age of Empires 2 Replay File .mgm Settings MGCSoft Equation Illustrator Macro .mgs Image MGCSoft Vector Shapes .mgv Audio Yamaha MegaVoice File .mgv Video PSP Video File .mgx Game Rise of Nations Saved Game .mgx Game Age of Empires 2 Expansion Replay File .mhs Misc Hardware Specification File .mht Web MHTML Web Archive .mhtml Web MIME HTML File .mi4 System Audio Player Firmware File .mic Image Image Composer File .mid Audio MIDI File .midi Audio MIDI File .mif Misc Management Information Format .mig Backup Windows Migration Backup File .milk Plugin MilkDrop Winamp Plugin Preset .mim Encoded Multi-Purpose Internet Mail Message File .mime Encoded Multi-Purpose Internet Mail Extension .miniusf Audio Nintendo 64 Song File .mint Compressed Linux Mint Installer File .mio Executable MioEngine Application File .mip Image Multiple Image Print File .mis Game Marble Blast Gold Mission File .mis Game Saved Game Mission File .mission Game Vega Strike Mission File .mix Game Command & Conquer Data File .mix Image PhotoDraw Image File .mix Raster Image Picture It! Image File .mj2 Video Motion JPEG 2000 Video Clip .mjp Video MJPEG Video File .mjpg Video Motion JPEG Video File .mk Developer Makefile .mka Audio Matroska Audio File .mkv Video Matroska Video File .mlb Developer Visual FoxPro Library .mlk Settings Mastercook Look File .mlp Audio Meridian Lossless Packing Audio File .mls Data Milestones Simplicity File .mls Misc CrystalPlayer Playlist .mm Data FreeMind Mind Map .mm6 Game Might and Magic 6 Saved Game .mm7 Game Might and Magic 7 Saved Game .mm8 Game Might and Magic 8 Saved Game .mma Image Master Album Maker Digital Photo Album .mmap Data MindManager Map File .mmc Data Microsoft Media Catalog .mme Encoded Multi-Purpose Internet Mail .mmf Audio Synthetic Music Mobile Application File .mmf Data Microsoft Message File .mml Page Layout FrameMaker Maker Markup Language File .mmm Audio MAGIX Music Maker File .mmo Misc Memory Map Overlay File .mmp Data MindManager Mind Map .mmp Misc MixMeister Playlist .mmp Data Master Album Maker Project .mmv Video MicroMV Video File .mnc Data My Notes Center Notebook .mng Data Yamaha PSR Disk Manager File .mng Raster Image Multiple Network Graphic .mnk Data My Notes Keeper Notebook .mnm 3D Image Character Studio Marker Name File .mno Data Macromedia Design Note .mnt Text FoxPro Menu Memo .mnv Video PlayStation Movie File .mnx Misc FoxPro Menu .mny Data Microsoft Money File .mo Developer Machine Object File .mo3 Audio MO3 Audio File .mobi Data Mobipocket eBook .mod Audio Amiga Music Module File .mod Developer Fortran Module File .mod Game Neverwinter Nights Module .mod Video JVC Recorded Video File .mod Misc ArchiCAD Module .modd Video Sony Video Analysis File .model 3D Image CATIA 3D Model FIle .mof Settings Managed Object Format File .moff Video Sony Video Analysis Index File .moho Data Anime Studio Animation Project .moi Video MOI Video File .mom Developer Managed Object Model .moov Video Apple QuickTime Movie .mosaic Data MacOSaiX Mosaic File .mou Compressed WinMount Compressed File .mov Video Apple QuickTime Movie .movie Video QuickTime Movie File .mox Data ExtendSim Simulation Software Model .moz Web Mozilla Cache File .mp 3D Image Maya PLE Project File .mp1 Audio MPEG-1 Layer 1 Audio File .mp2 Audio MPEG Layer II Compressed Audio File .mp21 Video MPEG-21 Multimedia File .mp21 Video AXMEDIS MPEG-21 Object .mp2m Game Max Payne 2 Mod File .mp2s Game Max Payne 2 Saved Game .mp2v Video MPEG-2 Video File .mp3 Audio MP3 Audio File .mp4 Video MPEG-4 Video File .mp4v Video MPEG-4 Video .mpa Audio MPEG-2 Audio File .mpb Backup MyPhoneExplorer Backup File .mpc Audio Musepack Compressed Audio File .mpcpl Misc Media Player Classic Playlist .mpd Data Microsoft Project Database .mpd Data File List Creator Playlist .mpdconf Settings Music Player Daemon File .mpe Video MPEG Movie File .mpeg Video MPEG Movie .mpeg4 Video MPEG-4 File .mpf Raster Image Microsoft Media Package FIle .mpf Video MainActor Project File .mpg Video MPEG Video File .mpg2 Video MPEG-2 Video File .mpga Audio MPEG-1 Layer 3 Audio File .mpj Data Minitab Project File .mpk Game Project64 Memory Pack File .mpkg Compressed Meta Package File .mpl Video AVCHD Playlist File .mpls Video Blu-ray Movie Playlist File .mpm Game Max Payne Modfication File .mpp Data Microsoft Project File .mpq Game Blizzard Mo'PaQ File .mpr Developer FoxPro Generated Menu Program .mps Misc Pocket Streets Map File .mps Game Max Payne Saved Game .mpt Data Microsoft Project Template .mpu Audio MPEG Layer 3 Audio File .mpv Video MPEG Elementary Stream Video File .mpv2 Video MPEG-2 Video Stream .mpx Executable FoxPro Compiled Menu Program .mpx Data Microsoft Project Exchange File .mpz Data Miradi Project File .mp_ Audio Mobile Phone Sound File .mq4 Data MetaTrader Custom Indicator .mqv Video Sony Movie Format File .mrb Image Multiple Resolution Bitmap .mrc Executable mIRC Script File .mrimg Disk Macrium Reflect Disk Image .mrk Misc DPOF Auto Print Order File .mrs Game GunZ Game Data File .mrw Raster Image Minolta Raw Image File .ms Executable 3ds Max Script File .ms-tnef Misc MS Transport Neutral Encapsulation Format .ms10 Data Multisim Circuit Design .ms3d 3D Image MilkShape 3D Model .msc Data MuseScore Composition File .msc System Microsoft Management Console Snap-in Control File .mscx Misc MuseScore Music Score File .mscz Misc MuseScore Compressed Score File .msdvd Video Windows DVD Maker Project File .mse Encoded 3ds Max Encrypted MAXScript File .msf Misc Mail Summary File .msf Settings Miranda IM Skin File .msg Text Outlook Mail Message .msh Video Visual Communicator Project File .msi Misc Windows Installer Package .msk Image Paint Shop Pro Mask .mskn Settings MediaMonkey Skin File .msm Settings Windows Installer Merge Module .msn Settings Host Blocking File .mso Misc Inline E-mail Attachment .mso Misc Microsoft Office Macro Reference File .msp Raster Image Microsoft Paint Bitmap Image .msp Developer MaxScript Page File .msp System Windows Installer Patch .mspx Web Microsoft ASP.NET Web Page .mss Misc Software Specification File .msstyle System Windows XP Unsigned Style .msstyles System Windows XP Style .mst Executable Windows SDK Setup Transform Script .mst Settings Corel Presentations Master Template File .msu Misc Windows Vista Update Package .msv Audio Memory Stick Voice File .mswmm Video Windows Movie Maker Project .mt2 Audio MadTracker 2 Module .mtd Misc Musicnotes Digital Sheet Music File .mte Audio MadTracker 2 Envelope .mtf Misc MasterCook Tips .mtf Misc Translation Memory Translations File .mtf Settings Motorola Theme File .mth Data Derive Math File .mti Audio MadTracker Instrument .mtm Audio MultiTracker Module .mtp Audio MadTracker 2 Pattern .mts Video AVCHD Video File .mts Audio MadTracker 2 Sample File .mtv Video MTV Video Format File .mtw Data Minitab Worksheet File .mtx Plugin MadTracker 2 Extension .mtx 3D Image MetaStream Scene File .mtz 3D Image Compressed MetaStream Scene File .mud Data Textease Multi User Database .muf Data Alpha Five Licence File .mui System MultiLanguage Resource File .mum System Windows Vista Update Package .mus Game Playstation 2 Music File .mus Audio Finale Notation File Format .mvb Video Multimedia Viewer Book Source File .mvc Video Movie Collector Catalog .mvd Video Movie Edit Pro Video Project .mve Video Infinity Engine Movie File .mvi Misc AutoCAD Movie Command File .mvs Misc Project Language and Simulation File .mvx Developer Multimedia Fusion Movement Extension .mw Data Maple Worksheet .mw Text MacWrite Text Document .mwd Text MarinerWrite Document .mwf Misc Translation Memory Word Find File .mwf Data MapGuide Author Map Window File .mwp Text Lotus Word Pro SmartMaster File .mws Audio MWave DSP Synth Instrument Extract .mws Data Maple Classic Worksheet .mwx Settings MapGuide Author Map Window XML File .mwx Data MicroWorlds EX File .mxc2 Data MAGIX Cache File .mxd Data ArcGIS Map Document .mxe Executable Macro Express Playable Macro .mxf Video Material Exchange Format File .mxl Misc Compressed MusicXML File .mxml Developer Flex MXML Component .mxp Plugin Macromedia Extension .myapp Developer Visual Studio Application XML File .myd Data MySQL Database Data File .mydocs System Send To My Documents .myi Data MySQL MyISAM Index File .mzp Audio Mozart Percussion File .mzp Compressed MAXScript Zip Package N File Extensions File types with extensions that start with the letter N. Extension File Type File Description .n-gage Game N-Gage Application .n3pmesh Game Knight Online 3D Mesh File .n64 Game Nintendo 64 Emulator ROM File .nap Audio Napster Secured Music File .nap Vector Image NAP Metafile .nav Game Counter-Strike Bot Navigation File .nav Image MSN Application Extension .nav2 Misc WinAVI Temporary Navigation File .nb Data Mathematica Notebook .nb7 Backup NovaBACKUP Output File .nba Backup Nero BackItUp Archive .nbf Backup Backup Now Archive .nbf Backup Nokia Backup File .nbi Backup Nero BackItUp Information File .nbk Backup NovaBACKUP Backup Script .nbu Backup Nokia Phone Backup File .nc Data Mastercam Numerical Control File .ncd Disk NTI CD-Maker Disc Image .ncd Image Nero Cover Designer Document .ncf Game No Cache File .nch Misc Outlook Express Folder File .nco Backup Nero BackItUp File .ncor Video Adobe Encore Project File .ncr Raster Image NCR Image .nd Settings QuickBooks Network Data File .ndb Data ClamAV Extended Signature File .ndc Settings Personal Communications Settings File .ndf Data SQL Server Secondary Database File .ndk Data Lotus Notes Design Elements File .nds Game Nintendo DS Game ROM .ndx Data dBASE Index File .nef Raster Image Nikon Electronic Format RAW Image File .neo Image NeoChrome Bitmap Image .nes Game Nintendo (NES) ROM File .net Data netViz Project File .net Plugin FileMaker Networking Module .neta Data Netica Binary File .neu 3D Image Pro/ENGINEER Neutral File .nff Image Neutral File Format .nfi Disk Dreambox Disc Image .nfo Game Age of Empires Player File .nfo Data Folio Views Infobase File .nfo Text Warez Information File .nfo System System Information File .ngage Game N-Gage Game File .nib Developer Interface Resources .nick Misc Outlook 2000 Nickname File .nif Image Gamebryo Image .nitf Data National Imagery Transmission Format File .njb Misc Nikon Photo Index File .nji Settings Nero Job Information File .nk2 Misc Outlook 2002 Nickname File .nki Audio KONTAKT Instrument File .nls System Microsoft National Language Support File .nltrack Game NoLimits Roller Coaster Track File .nmind Data NovaMind Mind Map File .nn Disk Nero CD File List .not Data Notation File .notebook Data SMART Notebook File .notes Text Memento Notes File .now Text Readme File .np Data Portfolio NetPublish File .npl Data Nokia Playlist File .npp Page Layout Art Explosion Publisher Pro Document .npr Data Nuendo Project File .npt Data Portfolio NetPublish Template .nra Audio Nero Audio Compilation .nrg Disk Nero CD/DVD Image File .nri Disk Nero ISO CD Compilation File .nrl Data Autonomy Interwoven Link File .nrs Backup NovaBACKUP Restore Script .nrt Audio Nokia Ringtone .nrw Raster Image Nikon Raw Image File .ns2 Data Lotus Notes 2 Database .ns3 Data Lotus Notes 3 Database .ns4 Data Lotus Notes 4 Database .nsa Audio Nullsoft Streaming Audio File .nsbca Game Nintendo DS Model Animation File .nsbmd Game Nintendo DS Model File .nsbtx Game Nintendo DS Model Texture File .nsf Audio NES Sound Format File .nsf Data Lotus Domino Database .nsf Data Lotus Notes Database .nss Misc Magnetic Screensaver File .nst Audio NoiseTracker Module .nsv Video Nullsoft Streaming Video File .nt System Windows NT Startup File .ntc Image Nikon Capture Custom Curves .ntf Image MediaFace II CD Label .nth Misc Nokia Series 40 Theme File .ntn Audio NOTION Song File .ntrk Game Pacific FIghters Online Track File .nts Settings Lotus Notes Traveler Server Config File .ntx Data Clipper Index File .numbers Data Numbers Spreadsheet File .nup Misc Smart Security Update File .nvc Video NeroVision Express Project File .nvc Settings Nikon Vignette Correction File .nvl Data UniChem Results File .nwc Audio NoteWorthy Composer File .nwctxt Text NoteWorthy Composer Text File .nwm Misc Sony NWM Display Screen File .nwp Misc Magnetic Wallpaper File .nwv Settings Dragon NaturallySpeaking User Archive .nxc Developer NXC Source Code File .nxg Web eSite Builder NXG Web Page .ny Plugin Nyquist Plug-in .nyf Data myBase Database File .nzb Web NewzBin Usenet Index File O File Extensions File types with extensions that start with the letter O. Extension File Type File Description .o Developer Compiled Object File .oab Data Offline Address Book .oar Compressed OpenSimulator Archive .ob! Misc Orbit Downloader Incomplete Download .obi Settings Outlook RSS Subscription File .obj Data Relocatable Object Code .obj 3D Image 3D Object File .obs Executable ObjectScript Script File .obz 3D Image Compressed 3D Object File .oca Developer Custom Control Library Type File .oce Settings Open Catalog Extension Connection File .ocr Text FAXGrapper Fax Text File .ocx Developer ActiveX Control .odb Data ABAQUS Database .odc Image OpenDocument Chart .odf Misc OpenDocument Formula .odf Data Open Document File .odg Image OpenDocument Graphic .odi Image OpenDocument Image .odif Image Open Document Interchange Format .odm Text OpenDocument Master Document .odm Audio OverDrive Media File .odo Text Online Operating System Write Document .odp Data OpenDocument Presentation .ods Misc Outlook Express 5 Mailbox .ods Data OpenDocument Spreadsheet .odt Text OpenDocument Text Document .odx Data BizTalk Server Orchestration File .oeaccount Data Windows Mail Account File .oeb Backup Outlook Express Backup Wizard File .oem Settings OEM Setup File .ofc Data Open Financial Connectivity File .off 3D Image Object File Format .ofl Text Ots File List .ofm Data OmniForm Form .oft Data Outlook File Template .ofx Data Open Financial Exchange File .oga Audio Ogg Vorbis Audio File .ogg Audio Ogg Vorbis Compressed Audio File .ogm Video Ogg Media File .ognc Web Dynamic Web Page .ogv Video Ogg Vorbis Video File .ogx Video Ogg Vorbis Multiplexed Media File .okt Audio Oktalyzer Module .ola Page Layout Online Access File .olb Misc OLE Object Library .old Backup Backup File .oma Audio Sony OpenMG Music File .omcs Data Office Manager Access File .omf Raster Image OMF Interchange Image File .omf Audio Open Media Framework File .omg Audio OpenMG Audio File .omo Developer OMake Object File .omp Data Office Manager Document Archive .omx Audio OtsAV Media Library Information File .ond Data Lotus Notes Encapsulated Memo File .one Data OneNote Document .onepkg Backup Microsoft OneNote Package File .oo3 Data OmniOutliner 3 File .opd Page Layout OmniPage Document .openbsd Text OpenBSD Readme File .opf Image FlipAlbum File .opf Data FlipViewer FlipBook File .opml Text OPML File .ops Settings Office Profile Settings File .opt Settings Options File .opx Data FlipAlbum Photo Album File .opx Data OrgPlus Org Chart .or2 Data Lotus Organizer 2 File .or3 Data IBM Lotus Organizer 97 File .or4 Data IBM Lotus Organizer 97 GS File .or5 Data Lotus Organizer 5 File .or6 Data Lotus Organizer 6 File .orf Raster Image Olympus RAW File .org Data Lotus Organizer File .ori Backup Original File .ort Text Rich Text Editor Document .orx Data RadiantOne VDS Database Schema .ost Misc Outlook Offline Folder File .osx Executable PowerPC Executable File .osz Game Osu! Beatmap File .ota Image OTA Bitmap .otb Image Nokia Over The Air Bitmap .otc Image OpenDocument Chart Template .otf Misc OpenDocument Formula Template .otf Data OpenTuft Tufting Design File .otf Font OpenType Font .otg Image OpenDocument Graphic Template .oth Web OpenDocument HTML Template .oti Image OpenDocument Image Template .otl Data NoteTab Outline File .otln Data Opal Outline File .otp Misc OpenDocument Presentation Template .ots Data OpenDocument Spreadsheet Template .ots Audio OtsAV Album File .ott Text OpenDocument Text Document Template .out Data Output File .ov2 Data TomTom Points of Interest Database .ova Data Open Virtual Appliance .ova Data Octava Musical Score .ove Audio Overture Musical Score .ovf Data Open Virtualization File .ovl Game Rollercoaster Tycoon 3 Sprites File .ovpn Settings OpenVPN Configuration File .ovw Image Cubase WAVE File Overview .owc Game OutWit Catch Database .owg Misc OutWit Gear Database .owl Developer OWL Source Code File .owm Misc OutWit XML Mashup File .oxt Plugin OpenOffice.org Extension .oyx Backup Approach Alternate Database Index P File Extensions File types with extensions that start with the letter P. Extension File Type File Description .p Developer Pascal Source Code .p Developer Python Pickle File .p01 Disk GEAR CD/DVD Disc Image .p01 Disk Toast CD Image .p12 Web Personal Information Exchange .p21 3D Image Express STEP Data Model File .p2m Settings PhotoWorks Appearance File .p2m Game Gameshark PlayStation 2 Cheats file .p2p Misc FolderShare Placeholder File .p2z 3D Image Compressed Poser Pose File .p3d 3D Image Peak3D 3D Graphics File .p3t Game PlayStation 3 Theme File .p65 Page Layout PageMaker 6.5 Document .p7b System PKCS #7 Certificate File .p7m Compressed Digitally Encrypted Message .p7s Text Digitally Signed Message .p96 Data Win96 Database File .p97 Data Win97 Database File .pa Page Layout Print Artist Project .pab Data Personal Address Book .pac Raster Image STAD Graphic File .pac Web Proxy Auto-Config File .pac Audio SBStudio II Song File .pack Encoded Pack200 Packed Jar File .pack.gz Compressed Pack200 Compressed Archive .package Game The Sims 2 Package File .package 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Developer PureBasic Source File .pbb Backup AT&T Phonebook File .pbd Data ProBID+ Data File .pbf Audio Pinnacle Sample Bank .pbi Compressed PC BSD Installer Package .pbm Raster Image Portable Bitmap Image .pbp Game PSP Firmware Update File .pbproj Developer Project Builder Project .pc Data Personal Composer File .pc1 Raster Image Degas Elite Low Res Image File .pc2 Raster Image Degas Elite Medium Res Image File .pc3 Raster Image Degas Elite High Res Image File .pc3 Settings AutoCAD Plotter Configuration File .pc6 Vector Image PowerCADD 6 Drawing File .pc7 Vector Image PowerCADD 7 Drawing File .pca Audio Perfect Clarity Audio .pcap Data Packet Capture Data .pcb Data Printed Circuit Board Design File .pcc Game Mass Effect 2 Package .pcd Raster Image Kodak Photo CD Image File .pcf Backup PaintCAD Font .pcg Audio Korg Instrument Bank File .pch Developer Precompiled Header File .pcm Audio Pulse Code Modulation .pcr Data PCMark Vantage Benchmark File .pct Page Layout Picture File .pcv Compressed Mozilla Profile Backup .pcx Raster Image Paintbrush Bitmap Image File .pd Image FlexiSIGN 5 Plotter Document .pd4 Data Windows Live Photo Gallery Information File .pd5 Data Windows Live Photo Gallery Information File .pdas Data PDAStore Data Store File .pdb Data Program Database .pdb Data Protein Data Bank File .pdb Data Palm Desktop Database File .pdb Backup PowerDesigner Database Backup File .pdc Encoded Lizard Safeguard Secure PDF File .pdd Raster Image Adobe PhotoDeluxe Image .pdd Data Medtronic Programmer Data File .pdf Page Layout Portable Document Format File .pdg Image Print Designer GOLD File .pdi Disk InstantCopy Disc Image .pdl Developer Perl Data Language File .pdm Developer VB Project Information File .pdm Data PowerDesigner Database File .pdn Raster Image Paint.NET Image File .pdr System Windows Port Driver .pds Video PowerDirector Project File .pds Data Planetary Data System File .pdx Data Adobe Acrobat Index File .pdx Data Product Data eXchange File .pe4 Raster Image PhotoImpact Image Archive .pe4 Raster Image Photo Explorer Thumbnail Archive .pea Compressed PEA File Archive .peak Audio Steinberg Peak File .peb Data ProEST+ Buildings File .pec Data Brother Embroidery File .pef Raster Image Pentax Electronic File .peg Game Peggle Replay File .pegn Game Peggle Nights Replay File .pem Web Privacy Enhanced Mail Certificate .pen Settings Paint Shop Pro Pen Preset File .pep Data TurboProject Project File .pes Misc Brother Embroidery Format .pet Compressed Puppy Linux Install Package .pex Executable ProBoard Executable File .pex Data Merak Peep Data File .pf Data Windows Prefetcher File .pf Compressed Private File .pfa Font Printer Font ASCII File .pfb Font Printer Font Binary File .pfc Data AOL Personal File Cabinet .pff Page Layout Formatta Portable Form File .pfg Developer jEEPers Program Configuration File .pfl Data Family Lawyer Document .pfl Page Layout PDFill Project File .pfl Plugin PhotoFiltre Plugin .pfm Font Printer Font Metrics File .pfr Image Paint Shop Pro Picture Frame .pfr Font Portable Font Resource File .pfx Text First Choice Word Processing Document .pfx System PKCS #12 Certificate File .pgi Video Video Recording File .pgm Raster Image Portable Gray Map Image .pgn Game Portable Game Notation File .pgp Misc PGP Security Key .ph Developer Perl Header File .ph Settings AOL Phone Home Settings File .phb Data Motorola Phone Book File .phb Settings PhtotoBase Album File .phm Data Pro Home Manager Data File .phn Game Algodoo Phun Phunlet .php Web Hypertext Preprocessor File .php3 Web PHP 3 Web Page .php4 Web PHP 4 Web Page .php5 Web PHP 5 Web Page .phtm Web PHP-Based Web Page .phtml Web PHP Web Page .phy Audio PhyMod Physical Modeling Data .phya Game Aleph One Physics File .phz Game Algodoo Phun Compressed Phunlet .pi Data Pi Calculation Data File .pi1 Raster Image Degas Low Resolution Image File .pi2 Raster Image Portrait Innovations Photo .pi2 Raster Image Degas Medium Resolution Image File .pi3 Raster 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Tracer Activity File .pkb Data Oracle Package Body File .pkg Compressed Mac OS X Installer Package .pkg 3D Image CoCreate OneSpace Modeling Package File .pkg Game PlayStation Store Downloaded Package .pkg Settings Symbian Package File .pkh Data Oracle Package File .pkm Game Pokemon Saved Game Data File .pks Data Oracle Package Spec File .pkt Data Packet Tracer Network Simulation Model .pl Developer Perl Script .pl Developer Prolog Source Code File .pl Vector Image Unix Color Plot File .pl0 3D Image 3D Home Architect Foundation Floor Plan .pl1 Developer PL/I Source Code .pl1 Game Adventure Maker Plug-in .pl1 3D Image 3D Home Architect Floor Plan .pl2 3D Image 3D Home Architect Second Level Floor Plan .pla Audio Sansa Playlist File .pla Misc iriver iQuickList File .pla 3D Image ArchiCAD Project Archive .playlist Video CyberLink PowerDVD Playlist .playset Misc Souptoys Playset File .plc Developer PL/B Source File .ple Developer Messenger Plus! Live Encrypted Log File .plg Plugin Sibelius Plug-in .pli Developer PL/I Source Code File .plist Settings Mac OS X Property List File .pln Data Spaceman Planogram File .pln 3D Image ArchiCAD Project File .pln Game Flight Simulator Flight Plan .pln Plugin InDesign Plug-in .pls Audio Audio Playlist .pls Settings PicoLog Settings File .plsc Executable Messenger Plus! Live Script File .plsk Misc Messenger Plus! Live Skin Pack .plt Vector Image AutoCAD Plotter Document .plt Vector Image HPGL Plot File .plugin Plugin Mac OS X Plug-in .plw Data PicoLog Data File .plx Executable Perl Executable File .ply Image Polygon Model File .pm Developer Perl Module .pm Raster Image Unix XV Graphic File .pm3 Raster Image PageMaker 3 Document .pm4 Page Layout PageMaker 4 Document .pm5 Page Layout PageMaker 5.0 Document .pm6 Page Layout PageMaker 6.0 Document .pmc Settings Performance Monitor Counter File .pmd Page Layout PageMaker Document .pmf Video PSP Movie File .pmg Vector Image PageMaker Group File .pmj Settings Pegasus Mail Configuration File .pmo Misc Pegasus Saved Message File .pmo Data Broderbund Print Meta Object File .pmp Settings AutoCAD Plot Model Parameter File .pmr Data Performance Monitor Report .pna Audio PhatNoise Audio File .pnf Misc Precompiled INF File .png Raster Image Portable Network Graphic .pni Raster Image Popnoggin Image File .pnproj Data Programmer's Notepad Project File .pnpt 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