AI Research Desk Date: April 14, 2026
| Software | Key Feature | Compatibility with .xlsx | | :--- | :--- | :--- | | | Cloud save to OneDrive | High (basic formulas only) | | Google Sheets | Real-time collaboration | High | | LibreOffice Calc | Open-source, offline | Very High (native support) | | WPS Office Spreadsheets | Excel-like interface | High (but includes ads) | excel free download