| Home (Frames) | Home (Noframes) |
| Ext | Description | Goto Shareware |
 Up | ||
| .T | Paradox file | |
| .T | Tads source | |
| .T | Tape Archive without compression (tar) | |
| .T | Tester symbol table (ReaGeniX code generator) | |
| .T | Unformatted manual page (Roff/nroff/troff/groff) | |
| .T44 | dBASE IV temporary file for Sort or Index | |
| .T64 | Commodore 64 emulator tape file (C64S emulator) | |
| .T65 | PageMaker template | |
| .TAAC | Sun TAAC bitmap image, see .VFF | |
| .TAB | TAB separated file | |
| .TAB | Colour lookup table (CMYK image) (Stork format) | |
| .TAG | DataFlex query tag name | |
| .TAH | Turbo Assembler Help file | |
| .TAL | TypeAlign text illustration | |
| .TALK | Text to speech | |
| .TAP | TAPe file (ZX Spectrum emulator by G.A. Lunter) | |
| .TAR | (Tape ARchive) An old archive-format especially used on Unix-like systems;
no compression, used for grouping files. Tar.exe Mime: application/x-tar | PKZ, WC, WZ Mac: SE |
| .TARGA | Truevision TarGA bitmap image, see .TGA | |
| .TAZ | Archive for Unix. TAR file compressed in Z format | WZ |
| .TB1 | Borland Turbo C font file | |
| .TB2 | Borland Turbo C font file | |
| .TBF | Fax (Imavox TurboFax) | |
| .TBK | Memo backup (dBASE IV/FoxPro) | |
| .TBK | ToolBooK (Asymetrix ToolBook) | |
| .TBL | TaBLe, used by several programs | |
| .TBL | Dynamic link library | |
| .TBR | Norton Desktop custom ToolBaR | |
| .TBS | German Ms Word text elements (TextBauSteine) | |
| .TBX | Project Scheduler 4 table | |
| .TC | Configuration (Turbo C/Borland C++) | |
| .TC | Termcap | |
| .TCH | Help file (Turbo C/Borland C++) | |
| .TCL | Tcl/Tk (Tool Command Language) script source code | |
| .TCO | T9000 object modules | |
| .TCSH | Unix shell script (tcsh) | |
| .TCW | TurboCAD for Windows drawing | |
| .TD | Turbo Debugger for DOS configuration file | |
| .TD0 | Teledisk disk image (compressed diskette in a file) | |
| .TD2 | Turbo Debugger for Win32 configuration file | |
| .TDB | TACT database | |
| .TDDD | Imagine Object File Format | |
| .TDF | Speedo Typeface Definition File | |
| .TDF | TheDraw font | |
| .TDH | Turbo Debugger Help file | |
| .TDI | TDI Explore & Alias Wavefront image | Various: XNV |
| .TDK | Turbo Debugger Keystroke recording file | |
| .TDR | Contents of Arvid tape | |
| .TDS | Turbo Debugger Symbol table | |
| .TDW | Turbo Debugger for Windows configuration file | |
| .TDW | Debugger symbol table (Borland C++ Builder) | |
| .TEF | Fax (Relisys TEFAX) | |
| .TEL | Telnet host file | |
| .TEM | IconAuthor input template | |
| .TEM | Borland C++ Turbo Editor Macro Language script | |
| .TER | TerraGen TERrain Terrain (landscape renderer) | |
| .TERRAIN | TerraGen Terrain Terrain (landscape renderer) | |
| .TET | Tetris results (DN) | |
| .TEX | LaTeX text Mime: application/x-tex | |
| .TEX | TEXture used in Paint Shop Pro | |
| .TEX | Idealist datasheet | |
| .TEX | Text document (TeX Device Independent File Format) (Scientific Word) | |
| .TEXT | Raw TEXT file, see also .TXT Notepad | |
| .TF | Turbo Profiler configuration | |
| .TF | TinyFugue MUD client macro | |
| .TFA | Turbo Profiler Area file | |
| .TFC | Catalogue file (Tobi's Floppy Cataloguer) | |
| .TFH | Turbo Profiler Help file | |
| .TFM | Tagged Font Metric file (Intellifont/TeX) | |
| .TFS | Turbo Profiler statistical information | |
| .TFW | File belonging to a TIF file (see there) as an airphoto image. The TFW contains the state plane coordinates. The corresponding TIF can be viewed by any TIF-viewer. For opening the TFW you probably need GIS software | |
| .TG | Technical Guidance (NRC Inspection Manual)/TD> | |
| .TG1 | On Target project file | |
| .TGA | Truevision TarGA bitmap image, can be RLE compressed. Also the extensions .tga, .icb, .pix, .bpx, .vda, .vst and .win? can be used for this format | ACD, GWS, IM, IV, JIR, LVP, PSP, PV, QVP, SB, TP, TVP MAC: GC Win & Mac: QT Various: XNV |
| .TGW | TerraGen World (landscape renderer) | |
| .TGWORLD | TerraGen World (landscape renderer) | |
| .TGZ | Archive for Unix; TAR file compressed in GZ format | PKZ, WZ |
| .THEME | Desktop theme W9x | |
| .THM | THuMbnail bitmap image used by eg. Picture Publisher and PhotoMagic Thumbnail | |
| .THN | Graphic Workshop THumbNail | |
| .THOR | Database description (THOR database) | |
| .THS | WordPerfect for Win THeSaurus dictionary | |
| .THX | Amiga THX Tracker music | |
| .TI | Temporary Instruction (NRC Inspection Manual) | |
| .TIC | FTN special file with associated file description (ALLFIX) | |
| .TIF | Aldus Tagged Image File Format (TIFF) bitmap image, many different formats (Uncompressed, Huffman, CCITT3/4, G3 FAX, G4 FAX, LZW, Packed Bits, Jpeg); also the extensions .CPT and .SEP are used for this format Imaging Mime: image/tiff | ACD, GWS, IM, IV, JIR, LVP, PSP, PP, PV, QVP, SB, TP, TVP MAC: GC Win & Mac: QT Various: XNV |
| .TIFF | Tagged Image File Format, see TIF | |
| .TIG | Tiger file (US government distributed maps) | |
| .TIL | Fuzzy logic knowledge base (Togai InfraLogic Fuzzy-C Compiler) | |
| .TIM | Sony PlayStation bitmap image | |
| .TIM | Tagged Image File Format, see TIF | |
| .TIS | MahJongg 3.0 tile set | |
| .TJL | Backup file (VAXTPU editor) | |
| .TL? | TimeLine File | |
| .TLB | Remote Automation TypeLiB files, Dynamic Link Library | QVP |
| .TLB | Visual C++ OLE Type library | |
| .TLB | Bubble Chamber reference table | |
| .TLB | Text library (VAX) | |
| .TLC | Compiled Tool Command Language source code (Geoworks Swat) | |
| .TLD | Teledisk disk image | |
| .TLP | TimeLine project | |
| .TM | Bitmap image (EOSAT's Landsat Thematic Mapper data file) | |
| .TMD | Lotus TvMap Document | |
| .TMF | Tagged Font Metric file (WordPerfect for Win) | |
| .TMO | Ztg global optimizer default output file (Zortech C++) | |
| .TMP | TeMPorary file | |
| .TMS | Telemate compiled script | |
| .TNY | TiNY bitmap image used on Atari | |
| .TOC | Table Of Contents (index file) | |
| .TOK | Borland C++ 4.x external tokens | |
| .TOS | Self-extracting file archive (Atari ST) | |
| .TP | Turbo Pascal configuration | |
| .TP | Turbo Profiler session-state file | |
| .TP3 | Harvard Graphics 3.0 template | |
| .TPB | Downloadable PCL Soft font file backup (HiJaak) | |
| .TPC | File produced when an inter-Topicscape topic link file is exported to Windows. (Used for a round-trip re-import) | 3DT |
| .TPF | Downloadable PCL Soft font file (HiJaak) | |
| .TPH | Turbo Pascal Help file | |
| .TPL | Ulead iPhoto Express TemPLate | |
| .TPL | Resident units library (Turbo Pascal) | |
| .TPL | TemPLate (Harvard Graphics/GoldEd/ITrack) | |
| .TPP | Borland Pascal 7.0 Protected Mode Units | |
| .TPU | Turbo Pascal Unit | |
| .TPU | Enable Teleprocessing | |
| .TPU | Command file (VAXTPU editor) | |
| .TPW | Turbo/Borland Pascal Unit (Windows library) | |
| .TPW | Turbo Profiler for Windows session-state file | |
| .TPZ | TAR.GZ compressed file archive (Tar and GNUzip) | |
| .TR | TomeRaider database | |
| .TR | Turbo Debugger for DOS session-state settings | |
| .TR | Unformatted manual page (Roff/nroff/troff/groff) | |
| .TR2 | Turbo Debugger for Win32 session-state settings | |
| .TRC | Debug support file (Power CTrace) | |
| .TRE | PC-Tools directory TREe file | |
| .TRI | Alias TRIangle file | PT |
| .TRIF | Bitmap image (Tiled Raster Interchange Format) | |
| .TRK | TRacK (i.e. video sequence) used by many games | |
| .TRM | Windows 3.x Terminal configuration settings | |
| .TRN | Translation support file (Quattro/Clarion) | |
| .TRS | Micrografx executable file | |
| .TRU | TRUe Basic source | |
| .TRW | Turbo Debugger for Windows session-state settings | |
| .TSM | Turbo Assembler for OS/2 manual | |
| .TSQ | ODBC script | |
| .TST | WordPerfect for Win printer test file | |
| .TSV | Tab Separated Values | |
| .TTF | TrueType Font, variable size fontview.exe | FMV, TP |
| .TTR | TrueType Font | TP |
| .TUB | PaintshopPro(5) picturetube, a multi-celled picture | |
| .TUD | The Ultimate Draw document | |
| .TUT | TUTorial file | |
| .TV | Paradox table view settings | |
| .TV1 | WordPerfect for Win overflow file above insert point in Doc 1 | |
| .TV2 | WordPerfect for Win overflow file above insert point in Doc 2 | |
| .TV3 | WordPerfect for Win overflow file above insert point in Doc 3 | |
| .TV4 | WordPerfect for Win overflow file above insert point in Doc 4 | |
| .TV5 | WordPerfect for Win overflow file above insert point in Doc 5 | |
| .TV6 | WordPerfect for Win overflow file above insert point in Doc 6 | |
| .TV7 | WordPerfect for Win overflow file above insert point in Doc 7 | |
| .TV8 | WordPerfect for Win overflow file above insert point in Doc 8 | |
| .TV9 | WordPerfect for Win overflow file above insert point in Doc 9 | |
| .TVF | dBASE table view settings | |
| .TWF | TabWorks data | |
| .TWW | Tagwrite template | |
| .TX8 | 8-bit ASCII text | |
| .TXF | TAR.F compressed file archive (TAR and Freeze) | |
| .TXI | TeX support file | |
| .TXT | Most used extension for simple OEM (Dos) or ANSI (Windows) TeXT, can also be in Unix or Mac format Notepad, Wordpad Mime: text/plain | DC, FMV, GWS, MV, PP, QV |
| .TXT | DisplayWrite document | |
| .TXW | Yamaha TX-16W Wave File (Convert (c) Villena) | |
| .TYM | PageMaker 4 time stamp | |
| .TZ | TAR.Z compressed file archive (TAR and Compress) | |
| .TZB | TAR.Z.btoa compressed file archive (TAR - Compress - Btoa) | |
| Up | ||
| Ext | Description | Goto Shareware |
| .U | Bitmap image (subsampled raw YUV file) | |
| .U4A | UnInstaller archive | |
| .U8 | Sample | |
| .UB | Music file (unsigned byte) | |
| .UC2 | UltraCompressor II compressed file archive | WC |
| .UCD | Use Case Diagram (Prosa/OM) | |
| .UCN | UltraCompressor II new compressed file archive | |
| .UDF | Photostyler filter | |
| .UDF | Uniqueness Database File (Windows NT) | |
| .UE2 | UltraCompressor II encrypted file archive | |
| .UFA | UFA compressed file archive | |
| .UFO | Ulead File for Objects (Ulead PhotoImpact) | |
| .UHS | Universal Hint System (binary file) | |
| .UI | Espire language source code file (Geoworks UI Compiler) | |
| .UI | User Interface (Sprint) | |
| .UIF | WordPerfect for Win long prompts for Windows | |
| .UIH | Espire header file (Geoworks UI Compiler) | |
| .UIL | Bitmap image (X-Motif UIL icon file) | IM |
| .UL | Ulaw music file | |
| .ULD | Procomm Plus uploaded file information | |
| .ULS | Internet Location Service Mime: text/iuls | |
| .ULT | UltraTracker music | WA |
| .UMB | Backup file made by MemMaker Notepad | IM |
| .UND | A86 UNDefined symbols | |
| .UNI | Forecast Pro datafile | |
| .UNI | Music (UniMOD/MikMOD) | |
| .UNV | SDRC I-DEAS file | |
| .UNR | File for Unreal, edited by UnrealEd | |
| .UNX | Text file containing UNIX specific info | |
| .UPD | UPDate info | |
| .UPF | Bitmap image (Universal Picture Format) | |
| .UPO | dBASE compiled update data | |
| .URI | List of Uniform Resource Identifiers (WWW) | |
| .URIS | List of Uniform Resource Identifiers (WWW) | |
| .URL | Internet shortcut (Universal Resource Locator) | |
| .URT | Bitmap image (Utah Run-Length Encoded image file) | |
| .USE | Log file | |
| .USP | PageMaker printer font with US Ascii extended character set | |
| .USR | User database (Procomm Plus/Turbo C++ tour) | |
| .USTAR | POSIX tar compressed file archive | |
| .UU | Encoded file archive (ascii) (uudecode/uuencode) | |
| .UUD | Encoded file archive (ascii) (uuencode) | |
| .UUE | UUEncoded file. Are used as ASCII attachments for email programs that can't handle binary attachments | GWS, PKZ, QVP, SE, TP, WC, WZ Mac: SE |
| .UW | Music file (Unsigned Word) | |
| .UWF | UltraTracker WaveSample music file | |
|
Up | ||
| Ext | Description | Goto Shareware |
| .V | Bitmap image (subsampled raw YUV file) | |
| .V | Consistency check support file (ReaGeniX code generator) | |
| .V | Main input file for an image (Vivid 2.0) | |
| .VAL | Validity checks and referential integrity (Paradox for Windows) | |
| .VAL | Values list object file (dBASE Application Generator) | |
| .VAN | VistaPro animation | |
| .VAP | Value Added Process (NetWare 2.xx) | |
| .VAR | Variable file (IconAuthor) | |
| .VBG | Visual Basic Group project | |
| .VBL | Visual Basic user control Licensing file | |
| .VBP | Visual Basic Project | |
| .VBR | Visual Basic remote automation Registration file | |
| .VBS | Video Bit Stream, see .MPV | |
| .VBS | VBScript | |
| .VBW | Visual Basic project Workspace | |
| .VBX | Visual Basic eXtension (custom control), 16 bit, can be used by e.g. Visual Basic or C++ | GWS, PP |
| .VBZ | Visual Basic Setup Wizard launch file | |
| .VC | Include file with color definitions (Vivid 2.0) | |
| .VC | VisiCalc spreadsheet | |
| .VCA | Visual Clip Art | |
| .VCF | Outlook Express VCard file Mime: text/x-vcard | |
| .VCF | Vevi Configuration File (WorldToolKit objects) | |
| .VCR | Arvid VCR driver | |
| .VCS | Netscape Calendar data | |
| .VCW | Visual workbench information (Ms Visual C++) | |
| .VCX | VisiCalc Advanced spreadsheet | |
| .VDA | Truevision Targa bitmap image, see .TGA | |
| .VDA | Graphics (VDA-FS surface data) | |
| .VDI | Bitmap image (Digital Research GEM VDI file) | |
| .VDO | VDOLive Script video | |
| .VDO | Video image (Story Board) | |
| .VDR | Drawing (ComputerEasy Draw) | |
| .VDU | Detailer 3D file | PT |
| .VEH | Vector data (SPANS VEH/VEC format) | |
| .VEW | View file (Clipper 5/Lotus Approach, earlier versions than 3.0) | |
| .VEW | GroupWise for Windows | |
| .VFA | FontLab database file | |
| .VFF | Sun TAAC Image File Format bitmap image | MAC: GC Various: XNV |
| .VFF | DESR VFF greyscale bitmap image | |
| .VFM | Ventura Publisher Font Metrics file | |
| .VFM | Voting Form (Voter) | |
| .VFN | Voting Form for Customers (Voter) | |
| .VGA | OS/2 bitmap image | |
| .VGA | Vga display font | |
| .VGD | Vga display driver (Generic CADD) | |
| .VGR | Ventura Publisher graphics | |
| .VI | Bitmap image (Jovian Logic VI video capture board) | |
| .VI | Script (Watcom Vi editor) | |
| .VI | National Instruments LabVIEW virtual instrument | |
| .VIC | Graphics (VICAR - Video Image Communication and Retrieval) | |
| .VICAR | Graphics (VICAR - Video Image Communication and Retrieval) | |
| .VID | Visual Image Directory | IM |
| .VID | Bitmap image (YUV12C M-Motion Frame Buffer file) | |
| .VID | Screen device driver (MsDOS/Word) | |
| .VIF | 1bit CCITT Group 4 bitmap image (Verity Image Format) (Topic) | |
| .VIF | Bitmap image (Khoros Visualization Image File Format) | IM |
| .VIFF | Bitmap image (Khoros Visualization Image File Format) | IM |
| .VIK | Viking graphics | |
| .VIR | VIRus or infected file | |
| .VIS | StudioPro 3D file | PT |
| .VIS | Vista graphics | |
| .VIT | Bitmap image (VITec scanner raster format) | |
| .VIV | VivoActive movies and audio, see .VIVO | |
| .VIVO | VivoActive movies and audio | |
| .VLB | Corel Ventura LiBrary | |
| .VLM | Virtual Loadable Module (Netware) | |
| .VM | Geoworks Virtual Memory file (or localization file) | |
| .VMC | Virtual memory configuration (DOS/4GW PM 32X DOS Extender) | |
| .VMF | Ventura Publisher font characteristics | |
| .VMS | Text file containing VMS specific info | |
| .VO | Vivid 2.0 include file with object definition | |
| .VOB | MPEG-2 movie, see MPG | |
| .VOC | Creative Lab's Soundblaster digitized sound (PlayVoc) | GW, WA |
| .VOD | Video On Demand | AV |
| .VOF | VZ Programmer Object Folder | |
| .VORT | Bitmap image (Very Ordinary Rendering Toolkit) | |
| .VOX | Dialogic sound | GW |
| .VP | Ventura Publisher publication | |
| .VP | 3D Studio Video Posting | |
| .VPF | Vector Product Format | |
| .VPG | Graphics (VPGraphics) | |
| .VPH | Virtual Pascal Help (VP/OS2) | |
| .VPI | Virtual Pascal Unit (VP/OS2) | |
| .VPR | Visual Prolog Resource | |
| .VQE | Plugin locater file (SoundVQ) | |
| .VQF | Yamaha SoundVQ (Transform-domain Weighted Interleave Vector Quantization) | CDMP3 |
| .VQL | Plugin locater file (SoundVQ) | |
| .VQL | Vantive (database application used by call centers mainly to track phone calls and customer issues) query file | |
| .VRM | Virtual Reality Modeling Language, see .VRML | |
| .VRM | QuattroPro overlay file | |
| .VRM | Visual Rexx language source code file (Watcom VRexx) | |
| .VRML | VRML Worlds for WWW, (Virtual Reality Modeling Language) Internet Explorer, Netscape Navigator and other modern webbrowsers Mime: x-world/x-vrml Mime(2): model/vrml | |
| .VRP | WATCOM VXRexx project | |
| .VRS | WordPerfect Video ReSource (device driver) | |
| .VRT | ViRTual world (WWW) | |
| .VS | Include file with surface definition (Vivid 2.0) | |
| .VSC | McAfee VirusScan ConfigFile | |
| .VSD | ViSio Drawing | |
| .VSH | McAfee VirusShield ConfigFile | |
| .VSM | VisSim simulation model | |
| .VSP | SPX sprite | |
| .VSS | Visio smartshapes file | |
| .VST | ViSTa Truevision Targa bitmap image, see also .TGA | Various: XNV |
| .VST | Visio template | |
| .VSW | Visio Workspace data | |
| .VUE | Ms Schedule+ configuration | |
| .VUE | 3D Studio animation | |
| .VUE | View (dBASE IV/FoxPro) | |
| .VVD | Minolta element file | PT |
| .VW | Volkswriter text file | |
| .VWR | PC Tools file VieWeR file | |
| .VXD | Ms Windows virtual device driver, 32 bit | |
| Up | ||
| Ext | Description | Goto Shareware |
| .W | Word chart file (APPLAUSE) | |
| .W30 | Printer font (AST TurboLaser) (Ventura Publisher) | |
| .W31 | Windows 3.1 startup file | |
| .W44 | dBASE temporary file for Sort or Index | |
| .W51 | WordPerfect 5.1 document | |
| .W60 | WordPerfect 6.0 document | |
| .W61 | WordPerfect 6.1 document | |
| .W95 | Windows95 related file | |
| .WAB | Windows Address Book file | |
| .WAD | War Allocation Daemon (Doom - Doom2) | |
| .WAP | Wap application project (Ericsson WapIDE) | |
| .WAS | ProComm source script | |
| .WAX | Audio Advanced Streaming Format | AV |
| .WAX | ProComm compiled script | |
| .WAV | WAVe PCM Sound, standard Windows sound format Soundrecorder, Media Player Mime: audio/wav Mime(2): audio/x-wav | AH, AV, CDMP3, CMW, FMV, GW, IV, PP, WA Win & Mac: QT |
| .WB | Workstation Basic file | |
| .WB1 | Quattro Pro/Win spreadsheet | QV, QVP |
| .WB2 | Quattro Pro/Win spreadsheet | QV, QVP |
| .WB3 | Quattro Pro/Win spreadsheet | QVP |
| .WBK | Ms Word auto-backup document | |
| .WBK | WordPerfect for Win WorkBooK | |
| .WBL | Upload file (Argo WebLoad II) | |
| .WBMP | WAP bitmap image, compact format intended for thin clients like cell phones Mime: image/vnd.wap.wbmp | IV |
| .WBS | Workstation Basic Source file | |
| .WBT | Batch file (WilsonWare WinBatch) | |
| .WCD | WordPerfect for Win macro token list | |
| .WCH | WordPerfect for Win macro facility file | |
| .WCM | WordPerfect for Windows Macro | |
| .WCM | Ms Works data transmission file | |
| .WCP | WordPerfect for Win product information description | |
| .WD | InfoSelect data file | |
| .WDB | Ms Works database | QVP |
| .WDF | Workshare Compare | |
| .WDL | 3D Gamestudio script file - stands for "World Definition Language" | |
| .WEB | Corel Xara web document | |
| .WEBOOGL | Web Object Oriented Graphics Library | |
| .WFM | dBASE Form Designer form object | |
| .WFN | Coreldraw FoNt | |
| .WFT | WaveFronT 3D object | AT |
| .WFX | WinFaX file | |
| .WG1 | Lotus 1-2-3/G worksheet | |
| .WG2 | Lotus 1-2-3 for OS/2 worksheet | |
| .WGP | Game data (Wild Board Games) | |
| .WHIP | Bitmap image (WHIP file) | |
| .WHT | Ms NetMeeting Whiteboard-document Netmeeting | |
| .WIC | Garbage, fake compressed data. Your files are in WINFILE.DLL | |
| .WID | Ventura Publisher WIDth table | |
| .WIF | Image Imaging | |
| .WIF | Window Intermediate File template | |
| .WIF | Weaving Information File | |
| .WIL | WinImage data | |
| .WIN | Truevision Targa bitmap image, see also .TGA | TP |
| .WIN | WINdow file (FoxPro/dBASE) | |
| .WINS | Makefile for WINS platform (EPOC) | |
| .WIZ | WIZard of eg. Ms Word or Ms Publisher | |
| .WK1 | Spreadsheet (Lotus 123 2.x/Symphony 1.1+) | FMV |
| .WK3 | Lotus 123 3.0/3.1 Spreadsheet | FMV, QVP |
| .WK4 | Lotus 123 4.0 Spreadsheet | FMV, QVP |
| .WKB | WordPerfect for Win document | |
| .WKE | Spreadsheet (Lotus 123 educational version) | |
| .WKQ | Quattro spreadsheet | |
| .WKS | Spreadsheet (Lotus 123 1A/Symphony 1.0/Ms Works) | FMV, QVP |
| .WKS | Xlisp WorKSpace | |
| .WKZ | Wingz spreadsheet | |
| .WLF | Upload file (Argo WebLoad I) | |
| .WLG | DrWatson LoG file | |
| .WLK | Graphics (Virtus Walkthrough) | |
| .WLL | Ms Word add-in | |
| .WLR | Virtual Reality Modeling Language, see .VRML | |
| .WM | Windows Media | AV |
| .WMA | Advanced Streaming Format audio MediaPlayer | AH, AV, CDMP3, IV, WA |
| .WMB | Used with 3D Gamestudio are compiled level map files | |
| .WMC | WordPerfect MaCro | |
| .WMC | MathCad backup of startup files | |
| .WMC | WordMARC text file | |
| .WMF | Windows MetaFile (vector and bitmap image) | ACD, FMV, GWS, IV, JIR, PSP, PV, QVP, SB, TP, TVP MAC: GC |
| .WML | Wireless Markup Language document (WAP) | |
| .WMP | Windows Magic icon Palette | |
| .WMP | 3D Gamestudio uncompiled level map (stands for "World MaP") | |
| .WMV | Audio/Video Windows Media | AV |
| .WN | NeXT WriteNow text document | |
| .WNF | Outline font description (CorelDraw native format) | |
| .WOA | Windows 3.x swap file | |
| .WOB | Object file (RIO Designer Pro) | |
| .WOC | Organization (Windows OrgChart) | |
| .WOW | Music (8 channels) (Grave Mod Player) | |
| .WP | WordPerfect v4/5/6 document | FMV, QV, QVP |
| .WP4 | WordPerfect 4.2 document | MV |
| .WP5 | WordPerfect 5.0/5.1/5.2 document | FMV, MV, QV |
| .WP6 | WordPerfect 6.0/6.1 document | FMV, MV, QV |
| .WPD | Document (WordPerfect/PFS:WindowWorks) | FMV, QV, QVP |
| .WPD | Windows printer driver | |
| .WPF | Enable Word Processing | QVP |
| .WPF | WorldPort Fax | |
| .WPF | WordPerfect form | |
| .WPG | WordPerfect bitmap or vector image, max. 256 colors | GWS, JIR (read only), PSP, PV, QVP, TP, TVP MAC: GC |
| .WPJ | Watcom C/C++ project | |
| .WPK | WordPerfect for Win macros | |
| .WPM | WordPerfect Macro | |
| .WPM | WordPerfect for Mac document | |
| .WPP | WordPerfect color Palette | |
| .WPS | Ms Works document | FMV, QV, QVP |
| .WPT | WordPerfect Template | QVP |
| .WPW | Novel PerfectWorks document | QVP |
| .WQ | Spreadsheet | |
| .WQ! | Quattro Pro compressed spreadsheet | |
| .WQ1 | Quattro Pro DOS spreadsheet | QV, QVP |
| .WQ2 | Quattro Pro 5 DOS spreadsheet | QVP |
| .WR1 | Symphony v1.1/1.2/2 spreadsheet | |
| .WRD | Charisma template | |
| .WRD | Psion Series 3 text document | |
| .WRI | Windows WRIte document WordPad, Write | MV, FMV, PP, QV, QVP |
| .WRK | Symphony v1/1.01 spreadsheet | |
| .WRL | VRML Worlds for WWW, (Virtual Reality Modelling Language) (Cosmo Player), see .VRML | |
| .WRP | Compressed Amiga file archive (Warp) | |
| .WRS | Windows ReSource eg. printer driver (WordPerfect for Win) | |
| .WRZ | VRML Worlds for WWW, (Virtual Reality Modelling Language) (Cosmo Player), see .VRML | |
| .WS | Windows Script file | |
| .WS | APL Worksheet | |
| .WS | WordStar 5.0/6.0 document | |
| .WS1 | WordStar for Windows 1.x document | |
| .WS2 | WordStar for Windows 2/2000 document | |
| .WS3 | WordStar for Windows 3 document | |
| .WS4 | WordStar for Windows 4 document | |
| .WS5 | WordStar for Windows 5 document | |
| .WS6 | WordStar for Windows 6 document | |
| .WS7 | WordStar for Windows 7 document | |
| .WSC | RIO Designer Pro scene file | |
| .WSD | WordStar document | |
| .WSH | Windows Scripting Host | |
| .WSP | Fortran PowerStation workspace | |
| .WSQ | Wavelet-packet Scalar Quantization bitmap format | |
| .WSRC | x-wais source | |
| .WST | WordStar Text | |
| .WSZ | Winamp Skin Zip | |
| .WTD | Wintune (=benchmark program) Document | |
| .WTK | URL address of person to talk to (WinTalk) | |
| .WTX | Wintune (=benchmark program) Document | |
| .WVE | Sound (8kHz) (Psion Series 3 palmtop) | |
| .WVL | Wavelet Compressed Bitmap image | |
| .WVX | Audio/Video Windows Media | AV |
| .WWB | WordPerfect button bar | |
| .WWK | WordPerfect keyboard layout | |
| .WXP | EXP for Windows document | |
| Up | ||
| Ext | Description | Goto Shareware |
| .X | Stardent AVS X bitmap image (24bit), see .AVS | |
| .X | Lex language source code | |
| .X | X1 archive | |
| .X | Alysis SuperDisk self-extracting archive | |
| .X | X-file animation (Direct3D) (DeepV2) | |
| .X01 | Paradox secondary index | |
| .X02 | Paradox secondary index | |
| .X03 | Paradox secondary index | |
| .X04 | Paradox secondary index | |
| .X05 | Paradox secondary index | |
| .X06 | Paradox secondary index | |
| .X07 | Paradox secondary index | |
| .X08 | Paradox secondary index | |
| .X09 | Paradox secondary index | |
| .X10 | Bitmap image (X Window dump) | |
| .X11 | Bitmap image (X Windows system window dump), see .XWD | |
| .X3D | x3d and xdart formats | |
| .XAR | Corel XARa image | |
| .XBM | X Windows system BitMap image (1bit text) Mime: image/x-xbitmap | GWS, IM, IV, SB MAC: GC Various: XNV |
| .XBW | Crossword | |
| .XC | Bitmap image (Constant image of X server screen) | |
| .XCK | Extended crack file (usually text) Notepad | |
| .XCL | Xtree for Win script | |
| .XDF | Extended disk format image (OS/2 xdfcopy.exe) | |
| .XFN | Printer font (Xerox 4045) (Ventura Publisher) | |
| .XFR | Ventura Publisher bitmap editor font file | |
| .XFT | 24 pin printer font (ChiWriter) | |
| .XGL | MegaBitz graphics language file | |
| .XGZ | MegaBitz vector drawing | |
| .XI | Fastracker 2.0 instrument file | |
| .XIF | eXtended Image File Format imaging Mime: image/vnd.xiff | |
| .XIM | Bitmap image (X11 Xim Toolkit file) | |
| .XL | Ms Excel spreadsheet | |
| .XLA | Ms eXceL Addin macro sheet | |
| .XLA | Xlib Archive (Xlib graphics library) | |
| .XLB | Ms eXceL Spreadsheet | |
| .XLC | Ms eXceL Chart | |
| .XLD | Ms eXceL Dialog sheet | |
| .XLK | Ms eXceL Backup | |
| .XLL | Ms eXceL XLL add-in | |
| .XLM | Ms eXceL Macro | |
| .XLS | Ms eXceL v3.0/4.0 spreadsheet | FMV, QV, QVP |
| .XLT | Ms eXceL Template | |
| .XLT | Translation table (Lotus 123/Symphony/Procomm Plus) | |
| .XLV | Ms eXceL VBA module | |
| .XLW | Ms eXceL Workspace | |
| .XL* | Ms eXceL spreadsheet | FMV, QVP |
| .XM | Music (FastTracker/Cubic Player) | WA |
| .XMI | Compressed eXtended MIdi music | WA |
| .XML | XML document (Extensible Markup Language) | |
| .XMZ | XGL movie (MegaView) | |
| .XNF | Standard Network File form | |
| .XNK | Ms Exchange shortcut | |
| .XOF | RenderMorphics | |
| .XOS | Xaos Tools bitmap image | |
| .XPIX | Nonogram puzzle | |
| .XPM | X Windows system PixMap (256 color image for X Windows) (8bit text) Mime: image/x-xpixmap | IM, IV, PV, SB MAC: GC Various: XNV |
| .XQT | SuperCalc macro spreadsheet | |
| .XQT | Waffle executable file | |
| .XR1 | Epic MegaGames Xargon game data | |
| .XREF | Cross reference (AIX as) | |
| .XRF | Cross-Reference File | |
| .XSC | XML schema | |
| .XT | FastTracker music track | |
| .XTB | LocoScript External Translation TaBle | |
| .XTP | XTreeGold overlay | |
| .XV | VIFF bitmap image (Khoros Visualization Image File Format) | |
| .XWD | Bitmap image (X Windows window screen dump) Mime: image/x-xwindowdump | IM, SB MAC: GC Various: XNV |
| .XWK | Keyboard mapping (Crosstalk) | |
| .XWP | Xerox Writer document | |
| .XWP | Crosstalk session | |
| .XX | XXEncoded file (ASCII) (xxdecode/xxencode), see .XXE | |
| .XXE | XXEncoded file (ASCII) (xxencode). These are used as ASCII attachments for email programs that can't handle binary attachments | PKZ, WC, WZ |
| .XY | XyWrite document | |
| .XY3 | XY Write document | |
| .XY4 | XY Write IV document | |
| .XYP | XY Write III Plus document | |
| .XYW | XY Write for Windows document | |
| Up | ||
| Ext | Description | Goto Shareware |
| .Y | Compressed Amiga file archive (Yabba) | |
| .Y | Bitmap image (subsampled raw YUV file) | |
| .Y | Grammar file (Yacc) | |
| .Y | C source | |
| .Y01 | Paradox secondary index | |
| .Y02 | Paradox secondary index | |
| .Y03 | Paradox secondary index | |
| .Y04 | Paradox secondary index | |
| .Y05 | Paradox secondary index | |
| .Y06 | Paradox secondary index | |
| .Y07 | Paradox secondary index | |
| .Y08 | Paradox secondary index | |
| .Y09 | Paradox secondary index | |
| .YAL | Clipart library (Arts & Letters) | |
| .YBK | Ms Encarta yearbook | |
| .YBM | Bitmap image (Face file) | |
| .YC | YACC archive | |
| .YIF | Graphics (color with lookup table) | |
| .YM | Atari ST Audio | |
| .YUV | Bitmap image (Abekas YUV SECAM or PAL file, or CCIR 601 1:1:1 file) | IM Various: XNV |
| .YUV3 | Bitmap image (CCIR 601 2:1:1 file) | |
| .YZ | Compressed file archive (YAC) | |
| Up | ||
| Ext | Description | Goto Shareware |
| .Z | Archive format, usually used on Unix, just compression (modified Lempel-Ziv compression) (Unix SysV pack) Mime: application/x-compress | WZ |
| .Z3 | Infocom game module for Z-machine version 3 | |
| .Z5 | Infocom game module for Z-machine version 5 | |
| .Z8 | Infocom game module for Z-machine version 8 | |
| .Z80 | Games for the X128 Spectrum 128 Emulator by James McKay | |
| .Z80 | Snapshot (ZX Spectrum emulator by G.A. Lunter) | |
| .ZAD | ZFax digitized voice file | |
| .ZDG | Compressed ZiffNet text document (Zview) | |
| .ZEISS | Zeiss CSLM bitmap image | |
| .ZER | Zerberus data file | |
| .ZFD | Zeroadic functions (ABC programming language) | |
| .ZGM | Graphics (Zenographics) | |
| .ZINC | Zinc Interface Library icon file | |
| .ZIP | Most used archive format on DOS/Windows (PKZip/InfoZIP/WinZip) Pkzip.exe, Pkunzip.exe Mime: application/x-zip-compressed | FMV, PKZ, PP, QVP, SE, WC, WZ Mac: SE |
| .ZOM | Compressed Amiga file archive (Zoom) | |
| .ZOO | Compressed file archive (Zoo) Zoo210.exe | |
| .ZPD | Zeroadic predicates (ABC programming language) | |
| .ZRP | Rapid simulation package | |
| .ZSH | Unix shell script (zsh) | |
| .ZTS | Z-Term script | |
| .ZVD | Zyxel Voicefile (Z-Fax) | |
| .ZW | Chinese text | |
| .ZZE | Encoded file archive (ASCII) | |
| .___ | Adinf table | |
| ._DD | Repair file made by Norton Disk Doctor You may try WhatFormat to help to figure out what formats they have | |
| .~$~ | 1st Reader temporary file | |
| .~AP | Old AppExpert project database (Borland C++ 4.x) | |
| .~DE | Project backup (Borland C++ 4.x) | |
| .~MN | Menu backup (Norton Commander) | |
| .$ | Temporary file (1st Reader) |
Thanks to Jouni for allowing me to add his giant extension database to this list and WhatFormat
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