| wq2 | Quattro Pro Spreadsheet |
| wr1 | Lotus Symphony Spreadsheet |
| wrd | Psion Word File |
| wri | Write Document |
| wrk | Lotus Symphony Spreadsheet |
| wrl | VRML Document |
| wrl | Virtual Reality World |
| wrp | Geomagic Wrap 3D Data |
| wrz | Gzip Compressed WRL File |
| ws | SmartWare Worksheet Document |
| ws | Worksheet Builder Worksheet |
| ws1 | WordStar 2000 Document |
| ws2 | WordStar 2000 Document |
| ws3 | WordStar 2000 Document |
| ws4 | WordStar 2000 Document |
| ws5 | WordStar 2000 Document |
| ws6 | WordStar 2000 Document |
| ws7 | WordStar 2000 Document |
| wsa | Jasc Animation Shop Animation |
| wsc | RIO Designer Scene |
| wsd | WordStar 2000 Document |
| wsdl | Web Services Description Language Document |
| wss | Worksheet Builder Self-Contained Worksheet |
| wst | WordStar 2000 Template |
| wst | Worksheet Builder Worksheet Template |
| wt0 | WordExpress Document Template |
| wt1 | WordExpress Document Template |
| wt2 | WordExpress Document Template |
| wt4 | Lotus 1-2-3 Smartmaster Template |
| wvl | WorkView3D Links |
| wvw | Interleaf WorldView Document |
| wws | Writing With Symbols Document |
| wxmx | wxMaxima Document |
| wxp | EXP Document |
| wyn | WYNN Document |