| .wmp |
Windows Media Photo File |
| .wcinv |
Windows Meeting Space Invitation File |
| .xls |
Excel Spreadsheet |
| .xlsx |
Microsoft Excel Open XML Spreadsheet File |
| .xlr |
Works Spreadsheet |
| .xll |
Excel Add-In File |
| .xar |
Xara Xtreme Drawing |
| .xltx |
Excel Open XML Spreadsheet Template |
| .xltm |
Excel Open XML Macro-Enabled Spreadsheet Template |
| .xlsb |
Microsoft Excel Binary Workbook File |
| .xex |
Xbox 360 Executable File |
| .xps |
XML Paper Specification File |
| .xap |
XACT Project |
| .xbap |
XAML Browser Application File |
| .xlt |
Excel Template |
| .xla |
Excel Add-In File |
| .xlb |
Setting File |
| .xlc |
Excel Chart |
| .xlm |
Excel Macro |
| .xlk |
Excel Backup File |
| .xlsm |
Excel macro-enabled workbook file |
| .xlam |
Excel Add-In file |
| .xbe |
Xbox Executable File |
| .xlv |
Excel Visual Basic Module |