| .widget |
Yahoo! Widget |
| .wmga |
Web Manga Document |
| .wx |
Wanam Xposed Backup File |
| .webz |
WEBZ Compressed eBook File |
| .wspak |
WebsitePanel Backup File |
| .wlb |
WinList Protocol Bundle |
| .wotmod |
World of Tanks Modification File |
| .xlsx |
Microsoft Excel Open XML Spreadsheet File |
| .xpi |
Cross-platform Installer Package |
| .xltx |
Excel Open XML Spreadsheet Template |
| .xltm |
Excel Open XML Macro-Enabled Spreadsheet Template |
| .xap |
XACT Project |
| .xrns |
Renoise Song File |
| .xfl |
Animate Movie Archive |
| .xmind |
XMind Workbook File |
| .xapk |
Compressed Android Package File |
| .xadd |
Expression Web Add-in |
| .xip |
macOS Signed Archive |
| .zip |
Compressed Archive File |
| .z01 |
WinZip First Split Zip File |
| .zxp |
Extension Manager Package |
| .zw |
Zooper Widget Template |
| .zm9 |
ZoneAlarm MailSafe Renamed Zip File |
| .zpi |
Zipped File |