| wbd | Softlink Whiteboard |
| wbd | WinBreadboard Circuit |
| wbdp | ANSYS Workbench DesignPoint Data |
| wbex | ANSYS Workbench Extension |
| wbf | TusiSoft Polyglot Dictionary Data |
| wbf1 | Nintendo Wii Loader Backup |
| wbk | TBK Tracker Book Data |
| wbl | Homemeeting Messenger Web Office Server List File |
| wbl | OPM WAP Bookmarks Archive |
| wbm | Likno Web Button Maker Data |
| wbn | WBNM Flood Hydrograph Model Data |
| wbr | WriteOnline Wordbar Data |
| wbtheme | FME Desktop Workbench Theme Data |
| wbv | WordBanks Editor Data |
| wbverify | Windows Backup Verify File |
| wbx | TBK Tracker Catalog Data |
| wc | Total Commander Directory Tree |
| wca | WinCatalog Standard Database |
| wcap | Mac OS X Wireless Diagnostics Captured Packets |
| wcat | WinCatalog Standard Database |
| wcb | WinCDR Data |
| wcd | Corel WordPerfect Macro Token List |
| wcd | Microsoft Works Calendar |
| wcf | FRAMES Water Concentration File |
| wcf | WebEx Saved Chat Session |
| wcinv | Windows Meeting Space Data |
| wck | WaterCAD Data |
| wcl | WinCatalog Light Database |
| wcmm | Bamboo Dock Application Data |
| wcrypt | Webcrypto-crypt Encrypted Data |
