| wdf | Workshare Deltafile |
| wdgx | Wedge CAD Document |
| wdl | DynaDoc Document |
| wdoc | WriteOnline Document |
| web | Xara Web Document |
| webdoc | Box Web Document |
| wef | WorkPapers Exchange Data |
| wf1 | EViews Workfile |
| wfa | WinFax Document |
| wfx | WinFax Document |
| wg | WordGrinder Document |
| wg1 | Lotus 1-2-3 Worksheet |
| wg2 | Lotus 1-2-3 for OS/2 Worksheet |
| wgv | WeatherGuard Vehicle Solutions Design |
| whp | WinPLOTR Williamson Hall Plot Data |
| win32 | Windows 32-bit Readme Document |
| wire | Alias Wire File |
| wiz | Microsoft Word Wizard |
| wj2 | Lotus 1-2-3 for Japan Document |
| wj3 | Lotus 1-2-3 Worksheet |
| wje | WinJournal Entry File |
| wk! | Lotus 1-2-3 Worksheet Backup |
| wk1 | Lotus 1-2-3 Worksheet |
| wk1 | Lotus 123 Spreadsheet |
| wk2 | Lotus 123 Spreadsheet |
| wk3 | Lotus 1-2-3 Worksheet |
| wk3 | Lotus 123 Spreadsheet |
| wk4 | Lotus 1-2-3 Worksheet |
| wk5 | Lotus 1-2-3 Worksheet |
| wke | Lotus 1-2-3 Educational Version Worksheet |
| wkq | Quattro Pro Spreadsheet |
| wks | Lotus 1-2-3 Worksheet |
| wks | Lotus 123 Spreadsheet |
| wks | Microsoft Works Spreadsheet |
| wku | Lotus 1-2-3 Worksheet |
