| Extension | File Type | Files scanned | Contributor |
| W | Applause Word data | 3 | |
| W | Compact compressed data (BE) | 2 | |
| W | Compact compressed data (LE) | 2 | |
| W2E | Motif Rack ES Voice Editor recorded sample | 12 | |
| W2ENT | The Witcher 2 Entity | 2 | |
| W2M | Solo Explorer Transcription | 8 | |
| W3D | Shockwave 3D Scene Export | 12 | |
| W3E | Motif Rack ES Voice Editor sample | 8 | |
| W3G | WarCraft III Recorded Game File | 3 | .Cryorb |
| W3M | WarCraft III map | 124 | .Cryorb |
| W3Z | WarCraft III saved game | 16 | .Cryorb |
| W64 | Sonic Foundry Wave-64 audio | 14 | |
| WAB | Outlook Express addressbook | 5 | |
| WACOMPREFS | Wacom tablet Preferences | 11 | |
| WACOMXS | Wacom eXpert Settings | 6 | |
| WACZ | Web Archive Collection Zipped | 12 | |
| WAD | Danganronpa game data archive | 4 | |
| WAD | Doom 2D Forever WAD archive | 3 | |
| WAD | DoomRL WAD resource | 4 | |
| WAD | Dungeon Keeper 2 game data archive | 5 | |
| WAD | Earache: Extreme Metal Racing game data | 2 | |
| WAD | Land Of Legends game data archive | 2 | |
| WAD | Mace Griffin: Bounty Hunter WAD | 2 | |
| WAD | Nintendo Wii Data | 12 | |
| WAD | PAM Development game data archive | 5 | |
| WAD | Starsky And Hutch game data archive | 4 | |
| WAD | Thunderstrike 2 briefing data | 8 | |
| WAD | Thunderstrike 2 campaign data | 26 | |
| WAD | WAD3 game data | 7 | |
| WAD | WADZip compressed WAD format | 2 | |
| WAD | Wipeout 2097 track data | 8 | |
| WAD | Wizard 101 game data | 2 | |
| WAD | id Software's DOOM Internal-WAD | 3 | |
| WAD | id Software's DOOM Patch-WAD | 65 | |
| WAF | Words and Figures document | 3 | |
| WAH | GFA Raytrace Animation (hi-res) | 2 | |
| WAL | Black and White 2 Wall data | 9 | |
| WAL | GFA Raytrace Animation (low-res) | 2 | |
| WAL | WinAmp 3.x / modern skin | 39 | |
| WALLET | Multibit Bitcoin wallet | 4 | |
| WAM | Wave/MIDI composition | 11 | |
| WAP | WinAsks Editor Questionnaire (v2.00) | 9 | |
| WAR | Java Web Archive | 14 | |
| WAR | Warcraft game data archive | 9 | |
| WAR | Westwood game data Archive | 2 | |
| WARC | Web ARChive File Format | 21 | |
| WARTS | Scamper WARTS storage | 2 | |
| WASM | WebAssembly module (binary) | 3 | |
| WATCH | WatchMaker Watch face | 16 | |
| WAUDIT | WINDEV dynamic Audit report | 6 | |
| WAV | ALF2 CD encoded RIFF/WAVe standard audio | 12 | |
| WAV/BWF | Broadcast Wave File audio | 197 | |
| WAV | ECHOSPEECH encoded audio | 15 | |
| WAV | Infinity Engine sound (v1.0) | 20735 | Sam. |
| WAV | RIFF/WAVe Audio (edited with Sound Forge) | 29 | |
| WAV | RIFF/WAVe standard Audio | 65 | |
| WAV | RIFF/WAVe with non-PCM audio | 26 | |
| WAV | SDR raw IQ data | 18 | |
| WAVE | MilkDrop Wave | 5 | |
| WB | Wally Beben module | 24 | |
| WB1/WB2 | Quattro Pro spreadsheet | 54 | |
| WB1 | Webshots Image | 263 | Joao Paulo Barraca |
| WB3 | Quattro Pro 7 spreadsheet | 19 | |
| WBA | WindowBlinds Progress Anim theme | 18 | |
| WBA | WindowBlinds skin-theme | 17 | |
| WBC | WebShots Collection | 2 | |
| WBCAT | Windows Backup Catalog (generic) | 265 | Joerg Jenderek |
| WBD | Softlink Whiteboard data | 6 | |
| WBD | WinBreadboard circuit schematic | 9 | Marcos F |
| WBDP | Workbench DesignPoint Data | 29 | |
| WBEX | ANSYS Workbench Binary Extension | 5 | |
| WBF | TusiSoft Polyglot dictionary | 2 | |
| WBFS | Wii Backup File System | 2 | |
| WBK | Spiderman 2 sound/music data | 5 | |
| WBK | Writer's Block document | 12 | |
| WBM | Webmin Module | 145 | |
| WBS | Winbot Script | 11 | Eddy Deyl |
| WBT | Webmin Theme | 74 | Joerg Jenderek |
| WBT | Webmin Theme (gif) | 12 | Joerg Jenderek |
| WBZ | WebShots Image | 11 | |
| WCAP | Weston CAPture video (BE) | 2 | |
| WCAP | Weston CAPture video (LE) | 2 | |
| WCI | WINDEV Internal Component list | 8 | |
| WCM | Corel WordPerfect Macro | 12 | |
| WCM | Microsoft Works for DOS Communication settings | 4 | |
| WCP | WinCHM Project | 7 | |
| WCP_SETTINGS | Alpha Five Web Project Settings | 6 | |
| WCS | WCS local service description | 3 | |
| WCST | Wirecast Setup | 11 | |
| WCX | FAR TC.Packer PlugIn | 9 | |
| WCX | Total Commander Packer extension (plugin) | 36 | |
| WCX64 | Total Commander Packer extension (plugin) (64-bit) | 22 | Joerg Jenderek |
| WCZ | Chamaleon Clock wallpaper clock skin | 7 | |
| WD2 | American Idol game data archive | 2 | |
| WDA | WINDEV HFSQL Analysis Description | 5 | |
| WDB | Microsoft Works Database | 33 | |
| WDB | Microsoft Works for DOS DataBase | 9 | |
| WDB | Xilinx ISE Simulator Waveform DataBase | 10 | |
| WDC | WINDEV Class | 94 | |
| WDCOVERAGE | WINDEV code Coverage data | 2 | |
| WDD | WINDEV HFSQL run-time analysis Description | 9 | |
| WDE | WINDEV Report | 155 | |
| WDF | Altera Waveform Design File | 3 | |
| WDF | Renishaw WiRE Data | 2 | |
| WDF | Wii Disc File (v1) | 3 | |
| WDF | Wii Disc File (v12 | 3 | |
| WDF | WinDupe disk image | 3 | |
| WDF | WinGenea Data File | 2 | |
| WDF | WinWorks DB Definition | 4 | |
| WDF | Workshare DeltaView Deltafile | 10 | |
| WDG | SymbOS desktop Widget | 2 | |
| WDG | WINDEV procedures set | 89 | |
| WDI | WinDev Component description | 14 | |
| WDJSON | Wind4Deap 2 project | 8 | |
| WDK | WinDev Component | 46 | |
| WDL | Actor Windows Description Language - Menu | 34 | |
| WDL | Actor Windows Description Language - Window | 94 | |
| WDL | DynaDoc Electric Exchange Document | 33 | |
| WDL | WinDraw Library | 4 | |
| WDP/WPP | WINDEV Project | 66 | |
| WDPROJ | Visual Studio Web Deployment Project | 10 | |
| WDR | Psion Serie 3/3a printer driver | 11 | |
| WDR | WINDEV query | 28 | |
| WDR | WinISD Driver parameters | 1125 | |
| WDR | ZX Wafadrive Wafer image | 2 | |
| WDS | 3D Haus Design project | 2 | |
| WDS | 3D WohnungsPlan project | 4 | |
| WDW | WINDEV Window | 656 | |
| WDX | Total Commander Content plugin | 11 | |
| WDX64 | Total Commander Content plugin (64-bit) | 19 | Joerg Jenderek |
| WDY | WINDEV run-time skin template | 51 | |
| WDZ | WINDEV compressed archive | 21 | |
| WEA | WeatherTool weather data | 4 | |
| WEAP | Weapon definition script | 2 | |
| WEB | BlackWidow Website Description | 10 | |
| WEB | Corel Xara Web document | 14 | |
| WEBARCHIVE | Apple Safari WebArchive | 28 | |
| WEBARCHIVEXML | Android browser XML webarchive | 4 | |
| WEBHISTORY | Safari Web History | 10 | |
| WEBLOC | Apple Finder Internet Location | 4 | |
| WEBLOC | macOS Website Location | 8 | |
| WEBM | WebM video | 24 | |
| WEBMANIFEST | Progressive Web Application Manifest | 8 | |
| WEBP | WebP bitmap | 5 | |
| WEBPART | SharePoint Web Part | 12 | |
| WEBTEST | Fiddler saved WebTest | 6 | |
| WEBTEST | Visual Studio Web Test | 18 | |
| WED | Infinity Engine region/map (v1.x) | 9 | |
| WEP | WINDEV Project Errors | 7 | |
| WER | Windows Error Report | 18 | |
| WEV | Fractal Design Painter Weaving Lib | 4 | |
| WF1 | EViews Workfile | 8 | |
| WFB | Turtle Beach WaveFront sound Bank | 3 | |
| WFBE | WinFBE Project | 29 | |
| WFC | WinFellow Configuration | 3 | |
| WFC | Wink Control bar | 5 | |
| WFC | Wink Flash Control bar | 6 | |
| WFH | GFA Raytrace project data (hi-res) | 2 | |
| WFL | GFA Raytrace project data (low-res) | 8 | |
| WFM | COSMI FormsMaker Form (v2.0) | 80 | |
| WFM | Pro Tools WaveForm cache | 6 | |
| WFM | Rigol waveform | 29 | |
| WFM | Tektronix TDS extended waveform data | 4 | |
| WFM | Tektronix TDS waveform data | 6 | |
| WFN | Corel Font/Symbol | 82 | |
| WFN | Wordup Graphics Toolkit Font | 6 | |
| WFP | Wink Flash Preloader | 8 | |
| WFP | Wondershare Filmora Project | 11 | |
| WFS | Wired For Sound configuration | 6 | |
| WFW | Windows NT Registry Hive (Windows Firewall) | 33 | Joerg Jenderek |
| WFX | AIM Extended Wavefunction | 10 | |
| WFX | AIM Extended Wavefunction (with rem) | 8 | |
| WFX | Infinity Engine Wave (Special) Effect (v1.0) | 10 | Sam. |
| WFX | Total Commander File system extension (plugin) | 14 | |
| WFX64 | Total Commander File system extension (64-bit) | 14 | Joerg Jenderek |
| WG | WordGrinder dumpfile | 9 | |
| WGEO | League of Legends World Geometry | 4 | |
| WGM | Chalk game data archive | 2 | |
| WGP | WingMan profile | 19 | |
| WGS | Thief: Deadly Shadows save game | 90 | Kristopher Neidecker |
| WGZ | Nokia S60 Web Runtime Widget Package | 7 | |
| WHL | Python Wheel package | 24 | |
| WHX | WinHex backup | 7 | |
| WI | Corel Wavelet Compressed bitmap | 2 | |
| WIBUCMRAU | WIBU-SYSTEMS Control | 8 | |
| WIC | J Wavelet Image Codec bitmap | 22 | |
| WIC | J Wavelet Image Codec bitmap (old) | 2 | |
| WIC | WIC (fake) compressed archive | 3 | |
| WIDGET | Konfabulator widget | 13 | |
| WIDGET | Yahoo! Widget | 30 | |
| WIF | CoffeCup Web Image Studio | 34 | Stef |
| WIF | Weaving Interchange Format | 14 | |
| WIM | Windows Imaging Format (WIM) | 1 | Joerg Jenderek |
| WIM/WIM2/SWM/ESD/PPKG | Windows Imaging Format (generic) | 28 | |
| WIM | Windows Imaging Format (pipable wimlib) | 1 | Joerg Jenderek |
| WIN | QLWA hard disk image | 4 | |
| WINDSPROSKIN | WinDS Pro Skin | 11 | |
| WINGS | Wings 3D mesh | 7 | |
| WINMD | Windows Runtime Metadata | 152 | |
| WIP | WITec Project data | 2 | |
| WIQ | Visual Studio Work Item Query | 9 | |
| WIRE | Autodesk Alias 2011 model | 8 | |
| WIRE | Autodesk Alias 2012 model | 6 | |
| WIRE | Autodesk Alias 2015 model | 5 | |
| WIRE | Autodesk Alias 2017 model | 41 | Stefano Panzeri |
| WIRE | Autodesk Alias 2018 model | 6 | |
| WIRE | Autodesk Alias 2019 model | 7 | |
| WIRE | Autodesk Alias 2020 model | 23 | |
| WIRE | Autodesk Alias 2021 model | 14 | |
| WIRE | Autodesk Alias 2022 model | 12 | |
| WIRE | Autodesk Alias 2023 model | 11 | |
| WIRE | Autodesk Alias 2024 model | 6 | |
| WIRE | Autodesk Alias model (generic) | 42 | |
| WIS | WarpIN Script | 12 | |
| WIS | WarpIN Script (with rem) | 12 | |
| WIX | Xara graphics | 6 | |
| WIXLIB | WiX Library | 15 | |
| WIXOBJ | WiX Object | 10 | |
| WIXPROJ | WiX Project | 13 | |
| WIXPROJ | WiX Project (UTF-8) | 21 | |
| WIZ | Iavadraw Wizard | 6 | |
| WIZARD | StormWIZARD resource | 4 | |
| WIZARD | Turboprint Wizard | 3 | |
| WJ1 | Lotus 123 Worksheet (V1J) | 0 | Joerg Jenderek |
| WJ3 | Lotus 123 Worksheet (V2J) | 17 | Joerg Jenderek |
| WJF | WinZip Job File | 11 | |
| WJF | WinZip Job File (XML type) | 4 | |
| WK | Khoros Visual Programming Workspace | 10 | |
| WK | Khoros Visual Programming Workspace (with rem) | 6 | |
| WK! | Lotus 123 SQZ! compressed Worksheet | 9 | |
| WK1/WR1 | Lotus 123/Symphony Worksheet (V2) | 47 | |
| WK3 | Lotus 123 Worksheet (V3) | 15 | |
| WK3/Wk4/WT4/FM3/123 | Lotus 123 Worksheet/format (V3-) | 15 | Joerg Jenderek |
| WK4/WT4 | Lotus 123 Worksheet (V4) | 24 | |
| WKF | VISI-serie CAD/CAM work file | 12 | |
| WKQ | Quattro for DOS spreadsheet (v1.0) | 18 | |
| WKS | AS-EASY-AS Worksheet (generic) | 10 | |
| WKS | DeskMate worksheet | 23 | |
| WKS | Deskmate Worksheet (old) | 9 | |
| WKS | Lotus 123 Worksheet (V1) | 15 | Joerg Jenderek |
| WKS | Lotus 123 Worksheet (generic) | 29 | |
| WKS | Microsoft Works Spreadsheet | 24 | |
| WKS | Microsoft Works for DOS Spreadsheet | 11 | |
| WKS | VP-Planner 3D Worksheet | 11 | |
| WKS | VP-Planner Plus spreadsheet | 27 | |
| WKS | VP-Planner Worksheet (v1.0) | 17 | |
| WKSP | Khoros/Cantata Workspace | 10 | |
| WKZ | DOS Navigator spreadsheet | 6 | |
| WKZ | Wingz spreadsheet | 43 | |
| WL1/VS1/BS1 | GameMaps format | 6 | |
| WLB | Design It! 3-D 2D object Library | 30 | |
| WLB | Design It! 3-D 3D object Library | 45 | |
| WLD | Flink game data archive | 8 | |
| WLD | GCS World data | 9 | |
| WLD | Lomax World game data | 9 | |
| WLD | Morfit WorldBuilder document | 8 | |
| WLD | Policenauts game data | 2 | |
| WLD | Retro64 game data | 2 | |
| WLD | Silent Hunter World data | 30 | |
| WLD | Terraria World | 17 | |
| WLD/DDD/DID/PDD | Verity Collection Index Descriptor | 15 | |
| WLDX | PGE World Map | 3 | |
| WLF | WLF WolfMAME recording info | 4 | |
| WLK | WeatherLink Binary Weather data | 3 | |
| WLM | CompW bitmap | 24 | |
| WLMP | Windows Live Movie Maker Project | 10 | |
| WLS | 602Tab Workbook | 18 | |
| WLT | Elecard Wavelet Image bitmap | 2 | |
| WLT | Ilium eWallet data | 5 | |
| WLT | Unity Window Layout | 12 | |
| WLX | Garmin MapSource Web Link | 4 | |
| WLX | Total Commander Lister extension (plugin) | 15 | |
| WLX64 | Total Commander Lister extension (64-bit) | 12 | Joerg Jenderek |
| WLXML | Foenix IDE Watch List | 6 | |
| WM/WM2D | Working Model 2D data | 12 | |
| WM3 | MSC.visualNastran Desktop Document | 71 | TBeu |
| WMD | NeXTStep Workspace Manager window attributes (binary) | 26 | |
| WMD | Windows Media Download package | 4 | |
| WMDB | Windows Media Player DataBase | 6 | |
| WMF | L3DT Water Map File | 4 | |
| WMF | Windows Metafile | 354 | |
| WMF | Windows Metafile (old Win 3.x format) | 6 | |
| WML | Wireless Markup Language | 3 | |
| WMO | World of Warcraft World Map Object | 38041 | Wayne Woods |
| WMP/WMAP | Infinity Engine World Map (v1.0) | 4 | |
| WMP | WGT Map (v2) | 2 | |
| WMP | WGT Map (v3.5) | 4 | |
| WMP | WGT Map (v4.0) | 3 | |
| WMP | WGT Map (v5.0) | 6 | |
| WMV/WMA | Windows Media (generic) | 118 | |
| WMZ | Windows Media Player skin | 59 | |
| WN | Wanton Packer song/module | 2 | |
| WNCRY | WannaCry ransomware encrypted | 3 | |
| WND | MAGIX music studio Window layout | 2 | |
| WNK | Wink presentation | 7 | |
| WOF | Hercules WriteOn Font | 5 | |
| WOFF | Web Open Font Format | 11 | |
| WOFF2 | Web Open Font Format 2 | 6 | |
| WOL | WOLF eBook | 12 | |
| WOPL | OPL3BankEditor bank format (v1) | 3 | |
| WOPL | OPL3BankEditor bank format (v2) | 2 | |
| WOPL | OPL3BankEditor bank format (v3) | 7 | |
| WOR | Instat+ Worksheet | 82 | |
| WOR | MapInfo Workspace | 7 | Rizla99 |
| WORKSPACE | Code::Blocks Workspace | 7 | |
| WORKSPACE | CodeLite Workspace | 4 | |
| WORKSPACE | Proteus Workspace | 37 | |
| WOTREPLAY | World of Tanks battle recording | 15 | |
| WOWPROJ | AddOn Studio for Word of Warcraft Project | 5 | |
| WOWSL | WOW Slider settings | 10 | |
| WOWSREPLAY | World of Warships Replay | 14 | |
| WOZ | WOZ disk image (v1) | 3 | |
| WOZ | WOZ disk image (v2) | 2 | |
| WP/DOC | Enterprise 128 Word Processor document | 10 | |
| WP | WordPerfect 4.2 document | 12 | Philip Storry |
| WP | WordPerfect 5.0 document | 12 | Philip Storry |
| WP | WordPerfect 5.1/5.2 Far East version document | 12 | Philip Storry |
| WP | WordPerfect 5.1/5.2 document | 5 | Philip Storry |
| WP | WordPerfect document (Amiga) | 7 | |
| WP | WordPerfect locked document (Amiga) | 3 | |
| WP2 | WebP2 bitmap | 10 | |
| WP2 | WinPlot data (v2) | 11 | |
| WP3 | WinPlot data (v3) | 11 | |
| WPA/WPD | ACT! word processor document | 6 | |
| WPB | openCanvas bitmap | 2 | |
| WPC | WINDEV Palette | 8 | |
| WPD | 602Text Document | 16 | |
| WPD | WinWorks text Document | 7 | |
| WPD | WordPerfect 6 Document | 47 | Philip Storry |
| WPD | WordPerfect Document (OLE2 Multistream Compound) | 14 | Joerg Jenderek |
| WPD | WordPerfect Document (generic) | 16 | |
| WPF | Bit Software Font (v1.0) | 4 | |
| WPF | BitImages Font (v1.0) | 5 | |
| WPF | BitPaint Font (v1.0) | 3 | |
| WPF | Enable document | 7 | |
| WPF | Enable document (var.2) | 5 | |
| WPF | WINDEV Profiler stats | 9 | |
| WPF | WinAPE Profile | 8 | |
| WPG | WordPerfect Graphics bitmap | 42 | |
| WPG | WordPerfect graphics | 13 | |
| WPI | WarpIN Installer | 101 | Erik Siers |
| WPJ | Microsoft Works wizard | 19 | |
| WPJ | Watcom C/C++ Project | 11 | |
| WPK | Whirlwind game data Package (v2.1) | 2 | |
| WPK | WordPerfect Keyboard | 14 | Joerg Jenderek |
| WPL | WinWorks spreadsheet | 4 | |
| WPL | Windows Media Player playlist | 16 | |
| WPM | WordPerfect Macro | 15 | |
| WPOSTX | Microsoft Windows Live Writer Post | 9 | |
| WPP | WavePad Audio Project | 3 | |
| WPR | WinISD Project | 11 | |
| WPROJ | Wwise Project | 4 | |
| WPROJ | Wwise Project (UTF-8) | 10 | |
| WPRP | Windows Performance Recorder Profile | 9 | |
| WPRP | Windows Performance Recorder Profile (UTF-8) | 3 | |
| WPS | KingSoft WPS2000 document | 4 | |
| WPS | KingSoft WPS98 document | 27 | |
| WPS | Kingsoft WPS Office 2001 document | 8 | |
| WPS | Kingsoft WPS Office 2002 document | 22 | |
| WPS | Kingsoft WPS Office document (alt.) | 226 | yangaoquan |
| WPS | Microsoft Works for DOS document | 23 | |
| WPS | Microsoft Works text document | 65 | |
| WPS | Microsoft Works text document (alternate) | 12 | |
| WPT | Brother Word Processor document | 3 | |
| WPT | Brother Word Processor document (newer) | 4 | |
| WPT | Fugawi 3 waypoint format | 13 | |
| WPT | Garmin PCX5 waypoint file | 24 | |
| WPT | Kingsoft Writer Template | 23 | |
| WPT | OziExplorer Waypoint | 16 | |
| WPT | SoftKey WinWorks document Template | 7 | |
| WPW | PerfectWorks bitmap | 2 | |
| WPW | PerfectWorks database | 4 | |
| WPW | PerfectWorks document (generic) | 89 | |
| WPW | PerfectWorks drawing | 2 | |
| WPW | PerfectWorks spreadsheet | 16 | |
| WPW | PerfectWorks word processor document | 17 | |
| WPW | WINDEV Mobile Window | 15 | |
| WPW | WhatPulse Pre-Pulse Information | 2 | Ryan Jones |
| WQ1 | Quattro Pro for DOS spreadsheet (v2.x-4.x) | 41 | |
| WQ2 | Quattro Pro for DOS spreadsheet (v5.x) | 12 | |
| WR1 | Lotus Symphony Worksheet (V1) | 6 | Joerg Jenderek |
| WR3/WRA | WRAptor compressed | 4 | |
| WRAP | Flwrap encoded | 4 | |
| WRAP | Meson Wrap info | 8 | |
| WRD | EPOC Word document | 11 | |
| WRD | Psion serie 3 word document | 7 | |
| WRF/WOT | WebEx Recording | 16 | Hasan Ates |
| WRF | Winlog Raster File bitmap | 2 | |
| WRI | Windows Write Document | 23 | |
| WRI | Windows Write Document (with OLE objects) | 5 | |
| WRK | Cakewalk Music project | 18 | |
| WRL | Virtual Reality Modeling Language | 73 | |
| WRP | Warp compressed disk image | 2 | |
| WRPL | War Thunder replay | 13 | |
| WS | IBM iSeries Client Access WorkStation profile | 22 | |
| WS | SigmaNEST WorkSpace | 4 | |
| WS | Smart Software WorkSheet (generic) | 8 | |
| WS | Smart Software WorkSheet (v2.1) | 4 | |
| WS | Trilo Tracker Waveform | 13 | |
| WSB | Microsoft Works portfolio | 7 | Joerg Jenderek |
| WSB | Windows SandBox configuration | 7 | |
| WSC | WinScope Compiled script | 24 | |
| WSC | Windows Script Component | 7 | |
| WSC | Windows Script Component (UTF-8) | 4 | |
| WSD | WordStar for Windows document | 23 | |
| WSDL | Web Services Description Language | 9 | |
| WSE | Wise script | 12 | |
| WSETTINGS | Wwise user project Settings | 9 | |
| WSF | Windows Script File | 10 | |
| WSF | Windows Script File (UTF-8) | 6 | |
| WSF | WordStar Screen Font (Award) | 24 | |
| WSF | WordStar Screen Font (Wordstar) | 8 | |
| WSI | Lenovo OneKey Recovery info | 5 | |
| WSKN | Wise Care 365 Skin | 6 | |
| WSL | WSL compressed data | 3 | |
| WSM | WordStar Macro | 18 | |
| WSP | FlowJo PC Workspace | 29 | |
| WSP | Visual C++ Workspace info | 11 | |
| WSP | Visual C++ Workspace info (with blank line) | 9 | |
| WSP | Whisper 32 data | 2 | |
| WSP | Wordsearch Mania! Puzzle | 10 | |
| WSP | Zilog Developer Studio II Workstate | 18 | |
| WSQ | Wavelet Scalar Quantization bitmap | 11 | |
| WSS | BIS WSS PCM audio | 2 | |
| WSS | Worksheet Builder Self-Contained worksheet | 8 | |
| WSSTYLES | Windows Sidebar Style | 6 | |
| WST | NextSTART Theme | 2 | |
| WST | WebMSX Save State | 10 | |
| WSZ | WinAmp 2.x Skin | 28 | |
| WT | Wintext document | 8 | |
| WT | WiredTiger data | 18 | |
| WTF/HGM | Hourglass movie capture | 12 | |
| WTF | Wintrac log data (v3) | 2 | |
| WTI | FL Keys Initialization | 6 | |
| WTL | Windows Test Technologies (WTT) logger results | 6 | |
| WTM | VioLet Composer music | 6 | |
| WTML | WorldWide Telescope collection | 11 | |
| WTP | Wink Template (v1) | 4 | |
| WTP | Wink Template (v2-3) | 3 | |
| WTR | Pen Pal document | 7 | |
| WTT | WorldWide Telescope Tour | 8 | |
| WTT | Write! document | 6 | |
| WTV | Windows Media Center recorded Television Video | 16 | |
| WUHB | Wii U homebrew Bundle | 3 | |
| WUP | WhatsUp Gold network map | 4 | |
| WUP | WordUp document | 5 | |
| WV | Sonarc compressed WAV audio | 131 | |
| WV | Sonarc compressed WAV audio (pre-release) | 65 | |
| WV | WavPack compressed audio | 87 | |
| WVC | WavPack compressed audio correction data | 41 | |
| WVD | Wang Virtual Disk image | 8 | |
| WVE | Cyberlink WaVeEditor project | 6 | Joerg Jenderek |
| WVE | Psion Series 3 audio | 23 | |
| WVE | Wondershare Video Editor project | 4 | |
| WVE | Wondershare Video Editor project (XML) | 7 | |
| WVE | World Construction Set Wave | 2 | |
| WVF | Yokogawa waveform data | 4 | |
| WVL | Corel Wavelet Compressed bitmap | 2 | |
| WVX | Windows Media redirector / shortcut | 7 | |
| WVZ | MUST music / song | 8 | |
| WW | Visual XBase form/screen | 56 | |
| WW5 | WillMaker 5 project | 3 | |
| WWD | Claw custome level | 10 | |
| WWF | Wordwall data | 4 | |
| WWH | WINDEV Frameset - Dynamic WEBDEV page | 26 | |
| WWN | WINDEV browser procedures set | 2 | |
| WWP | WWarp disk image | 4 | |
| WWS | WINDEV WEBDEV Style Sheet | 4 | |
| WWT | WINDEV page Template | 17 | |
| WWU | Wwise Work Unit | 52 | |
| WWU | Wwise Work Unit (UTF-8) | 28 | |
| WWV | FractalWeave parameters | 5 | |
| WX | The American Heritage Dictionary Sorted Index (Win) | 2 | |
| WXG | WxGlade project | 27 | |
| WXL | WiX Localization (ASCII) | 17 | |
| WXL | WiX Localization (UTF-8) | 13 | |
| WXM | Dominion Map | 61 | |
| WXM | wxMaxima batch (v1) | 8 | |
| WXMX | wxMaxima document | 8 | |
| WXN | Waixing Famicom Game ROM | 174 | |
| WXP | Dominion Map (demo) | 53 | |
| WXP | EXP document | 14 | |
| WXP | Wax Project | 8 | |
| WXS | Code::Blocks wxSmith resource | 11 | |
| WXS | Windows Installer XML Source | 21 | |
| WXS | Windows Installer XML Source (UTF-8) | 2 | Joerg Jenderek |
| WXT | WINDEV automated Tests | 5 | |
| WYG | WYSIWYG project data | 6 | |
| WZ | MapleStory game data | 5 | |
| WZD | Sharp Wizard data (generic) | 32 | |
| WZD | Sharp Wizard memo | 17 | |
| WZD | Sharp Wizard program | 10 | |
| WZD | Sharp Wizard schedule | 5 | |
| WZL | Winzle puzzle | 2 | |
