| vvi | Lifecycle Visualization Configuration File |
| vwi | AllStar Visitor Watch Configuration |
| w4j | WinRun4J Settings |
| wacomxs | Wacom Tablet Expert Settings |
| wbx | Mikrotik RouterOS Winbox Configuration |
| wcr | Ergane Configuration |
| wcst | Wirecast Setup |
| wda | NetManage RUMBA Configuration |
| wee | Wee Configuration File |
| wfc | Windows Wireless Network Settings |
| wfg | WinFrog Configuration Data |
| wfw | Windows Firewall Exported Rules |
| wgc | WatchGuard Log Server Config File |
| wgd | WatchGuard Dimension Settings Data |
| wgp | Logitech WingMan Game Profile |
| whd | WinUAEX WHDLoad Settings |
| whz | WinUAEX Zipped WHDLoad Settings |
| wlm | HP-UX Workload Manager Configuration |
| wlvs | Windows Live Movie Maker Video Settings |
| wme | Windows Media Encoder Session Profile |
| wos | Words of Worship Output Settings Data |
| wpx | Windows Printer Description |
| ws | IBM Personal Communications WorkStation Profile |
| wscx | Wondershare SurveyCreator Data |
| wsdt | IAR Embedded Workbench Workspace Settings |
| wst | WinSSHD Settings |
| wtc | WaveThunder Configuration Data |
| wti | WebTranslateIt Configuration |
| wtp | Word2TeX Preferences |
| wusikprst | Wusikstation Preset Data |
| wxa | Buxco System Hardware Configuration Data |
| wxpr | Wax Preset Data |
| wzc | AbleCommerce Wizard Configuration Data |
| wzconfig | WinZip Configuration |
| x4k | XML4King Configuration |