| Extension |
File Type |
File Description |
| .w01 | Audio | Yamaha SY Series Wave File |
| .w32 | Video | WinCAPs Subtitle File |
| .w3g | Game | Warcraft 3 Replay File |
| .w3m | Game | Warcraft III Map File |
| .w3x | Game | Warcraft III Expansion Map FIle |
| .w3z | Game | WarCraft III Saved Game File |
| .wab | Data | Windows Address Book |
| .wad | Game | Wally Game Texture Archive (Most common) |
| .wal | Game | Quake 2 Texture File (Most common) |
| .war | Compressed | Java Web Archive |
| .wav | Audio | WAVE Audio File |
| .wave | Audio | WAVE Sound File |
| .wax | Audio | Windows Media Audio Redirect |
| .wba | Misc | WindowBlinds Compressed Skin |
| .wbk | Text | Word Document Backup (Most common) |
| .wbmp | Raster Image | Wireless Bitmap Image File |
| .wbt | Game | Toribash Help File |
| .wcf | Text | WebEx Saved Chat Session |
| .wcm | Misc | Microsoft Works Communications Script (Most common) |
| .wcp | Video | WinDVD Creator Project File |
| .wdb | Data | Microsoft Works Database |
| .wdgt | System | Dashboard Widget (Most common) |
| .wdl | Developer | World Definition Language Script |
| .wdp | Raster Image | Windows Media Photo File |
| .wea | Data | Ecotect Weather File |
| .web | Raster Image | Xara Web Format |
| .webarchive | Web | Safari Web Archive |
| .webloc | Web | Mac OS X Website Location |
| .wer | System | Windows Error Report |
| .wfb | Audio | WaveFront Sound Bank |
| .wfd | Audio | WaveFront Drum Kit File |
| .wfm | Data | dBASE Form |
| .wfp | Audio | WaveFront Program File |
| .wgp | Data | Web Gallery Project |
| .wgs | Image | Walk-Graph Segment |
| .wgt | Data | XNBC Synaptic Weights File (Most common) |
| .wgz | Text | S60 Web Runtime Widget Package |
| .whtt | Web | HTTrack Website Copier File |
| .wi | Image | Wavelet Image |
| .wic | Image | J Wavelet Image |
| .widget | Executable | Yahoo! Widget |
| .wim | Game | Windows Imaging Format File |
| .win | Backup | Windows Backup File (Most common) |
| .wjr | Data | ReGet Deluxe Data File |
| .wk1 | Data | Lotus Worksheet |
| .wk2 | Data | Lotus 2 Worksheet |
| .wk3 | Data | Lotus 3 Worksheet |
| .wk4 | Data | Lotus 4 Worksheet |
| .wk5 | Data | Lotus 5 Worksheet |
| .wki | Data | Lotus 2 Worksheet |
| .wks | Data | Microsoft Works Spreadsheet (Most common) |
| .wku | Data | Lotus 1-2-3 Spreadsheet |
| .wm | Video | Windows Media File |
| .wma | Audio | Windows Media Audio File |
| .wmd | Video | Windows Media Download Package |
| .wmdb | Data | Windows Media Database File |
| .wmf | Vector Image | Windows Metafile |
| .wml | Web | Wireless Markup Language File |
| .wmmp | Video | Windows Movie Maker Project File |
| .wmp | Image | Windows Media Photo File |
| .wms | Settings | Windows Media Skin |
| .wmv | Video | Windows Media Video File |
| .wmx | Video | Windows Media Redirector |
| .wmz | Settings | Compressed Windows Media Player Skin |
| .wn | Text | WriteNow Text Document |
| .wnk | Image | Wink Screen Capture |
| .woa | Web | WebObjects Application |
| .wor | Data | MapInfo Workspace File |
| .workflow | Executable | Automator Workflow |
| .wot | Compressed | Web Of Trust File |
| .wow | Audio | Grave Composer Music Module |
| .wp | Text | WordPerfect Document |
| .wp4 | Text | WordPerfect 4 Document |
| .wp5 | Text | WordPerfect 5 Document |
| .wp6 | Text | WordPerfect 6 Document |
| .wp7 | Text | WordPerfect 7 Document |
| .wpa | Text | ACT! Word Processing Document |
| .wpd | Text | WordPerfect Document (Most common) |
| .wpf | Data | WordPerfect Form |
| .wpg | Vector Image | WordPerfect Graphic File |
| .wpk | Executable | WordPerfect Macro (Most common) |
| .wpl | Misc | Windows Media Player Playlist (Most common) |
| .wpm | Misc | WordPerfect Macro |
| .wpp | Settings | WordPerfect Color Palette (Most common) |
| .wproj | Audio | Wwise Project |
| .wps | Text | Microsoft Works Word Processor Document (Most common) |
| .wpt | Text | WordPerfect Template |
| .wpx | System | Printer Description File |
| .wrf | Web | WebEx Recording |
| .wri | Text | Windows Write Document |
| .wrk | Audio | Cakewalk Music Project |
| .wrl | Image | VRML World |
| .wrp | Image | Geomagic 3D Wrap File |
| .wrz | Image | VRML World |
| .ws | Executable | Windows Script |
| .wsc | Developer | Windows Script Component |
| .wsdl | Web | Web Services Description Language File |
| .wsf | Executable | Windows Script File |
| .wsh | Text | Windows Script Host Settings |
| .wsz | Misc | Winamp Classic Skin |
| .wtb | Data | Win-Test Binary Log File |
| .wtd | Game | Grand Theft Auto IV Textures File |
| .wtf | Game | World of Warcraft Text File |
| .wtr | Data | Encarta File |
| .wus | Audio | WUTG Tagged Audio File |
| .wut | Audio | WUTG Tag File |
| .wv | Audio | WavPack Audio File |
| .wvc | Audio | WavPack Correction File |
| .wvx | Video | Windows Media Video Redirector |
| .wwd | Misc | Works Wizard File |
| .wwu | Audio | Wwise Work Unit |
| .wx | Game | Flight Simulator Weather File |
| .wz | Game | MapleStory Game Data File (Most common) |
| .wzmul | Misc | WinZip Registration File |
