| xlax | Microsoft Excel 2007 VBA Add-in |
| xlb | Microsoft Excel toolbar Setup |
| xlc | Microsoft Excel Chart File |
| xlc3 | Microsoft Excel 3 for Mac Chart Document |
| xlc4 | Microsoft Excel 4 for Mac Chart Document |
| xlcsv | Microsoft Excel Comma-Separated Values Document |
| xld | Microsoft Excel Dialogue |
| xlf | XLIFF Document |
| xli | XLIFF Document |
| xlif | XLIFF Document |
| xliff | XLIFF Document |
| xline | XLine Mind Map Document |
| xlk | Microsoft Excel XLS Backup |
| xll | Microsoft Excel Add-in |
| xlm | Microsoft Excel Macro Definition |
| xlm4 | Microsoft Excel 4 for Mac Macro Data |
| xlr | Microsoft Works Spreadsheet |
| xls | Microsoft Excel Worksheet |
| xls3 | Microsoft Excel 3 for Mac Document |
| xls4 | Microsoft Excel 4 for Mac Document |
| xls5 | Microsoft Excel 5 for Mac Document |
| xls8 | Microsoft Excel 98 for Mac Document |
| xlsb | Microsoft Excel 2007 Document |
| xlse | Document Manager Encrypted XLS Document |
| xlshtml | Microsoft Excel HTML Spreadsheet |
| xlsl | Document Manager Locked Excel Document |
| xlsm | Microsoft Excel 2007 Document |
| xlsmhtml | Microsoft Excel HTML Spreadsheet |
| xlst | OnlyOffice Internal XLSX Document |
| xlsx | Microsoft Excel 2007 Document |
