| w | Google Toolbar Search History Data |
| w14 | Genesis 2000 W14 Data |
| w16 | Genesis 2000 W16 Data |
| w2a | Yamaha Motif All Format Audio Data |
| w2b | WinBackup Archive |
| w2m | Solo Explorer Transcription |
| w2r | WindPRO 2 Profile |
| w2w | Yamaha Motif Waveform Data |
| w3c | WinCatalog Database |
| w3ca | WinCatalog Database |
| w3cat | WinCatalog Database |
| w3d | Adobe Shockwave 3D Scene |
| WinImage Raytracing Control Data |
| w3l | W3launch Data |
| w44 | dBASE IV Temporary Data |
| w7g | Yamaha Motif ES Arpeggio Data |
| w7s | Yamaha Motif ES Song Data |
| w7w | Yamaha Motif ES Waveform Data |
| w86 | Emacs W86 Data |
| wa! | Tascam Gigastudio Compressed Waveform Data |
| waa | eXtendable Wad Editor WAA Data |
| wab | Windows Address Book Data |
| wab~ | Windows Address Book Backup |
| wac | WISCO Accounts Storage |
| waflib | Dental Wings Open System Data |
| waim | ReliaSoft Weibull++ Import Template |
| waj | WinAutomation Job |
| wajac | Sesam GeniE Wave Load Input Data |
| wake | HEADTAIL Wakefield Repository Data |
| wal | CodeWallet Pro 3 Wallet |
| WinAMP Skin |
| wallet | MultiBit Wallet File |
| MultiDoge Wallet Data |
| walletx | Enpass Backup Data |
| waml | X-Appl Web Application Markup Language Data |
| wand | GarageBand Magic Template |
| wao | WinAutomation Add-on |
| warning | NASA VIRV Results Data |
| warpgrid | Paint.NET Grid Warp Data |
| was | Symantec Procomm Plus Script |
| watch | Watch Faces for Android Wear Devices |
| watchface | Apple Watch Face Data |
| waver | KRISTAL Waver Arrangement Data |
| wavm | eXtendable Wad Editor WAVM Data |
| wax | Procomm Plus Compiled Script |
| wa_ | Compressed WAV File |
| wb | Freelang Dictionary Database |
| wb4 | WindowBlinds 4 Default Skin |
| wba | WindowBlinds Skin |
| wbb | WinBackup Archive |
| wbc | Webshots Image Collection |
| wbcat | Windows Backup Catalog |
| wbd | eBeam Whiteboard |
| Softlink Whiteboard Data |
| WinBreadboard Circuit |
| wbdp | ANSYS Workbench DesignPoint Data |
| wbex | ANSYS Workbench Extension |
| wbf | Microsoft Windows Batch File |
| TusiSoft Polyglot Dictionary Data |
| wbf1 | Nintendo Wii Loader Backup |
| wbjn | ANSYS Workbench Journal Script |
| wbk | Corel WordPerfect Workbook Data |
| TBK Tracker Book Data |
| wbl | Argo WebLoad Upload File |
| Homemeeting Messenger Web Office Server List File |
| OPM WAP Bookmarks Archive |
| wbm | Likno Web Button Maker Data |
| wbn | WBNM Flood Hydrograph Model Data |
| wbp | Orgadata LogiKal WBP Data |
| wbr | WriteOnline Wordbar Data |
| wbrx | WriteOnline Grid Data |
| wbs | Webshots Screensaver |
| wbt | Crikk Wordbar Template |
| Norton Desktop Data |
| wbtheme | FME Desktop Workbench Theme Data |
| wbu | Warrior Service Backup Data |
| wbv | WordBanks Editor Data |
| wbverify | Windows Backup Verify File |
| wbx | TBK Tracker Catalog Data |
| wc | Total Commander Directory Tree |
