OnlyOffice Spreadsheet

OnlyOffice Spreadsheet is a browser-based and desktop spreadsheet editor made by Ascensio System SIA. It solves a major problem: teams needing Microsoft Excel compatibility without paying for Microsoft Office.

Features

• Excel Compatibility: Opens, edits, and saves .xlsx files natively. Formulas, pivot tables, and macros transfer without data loss.
• Real-Time Collaboration: Multiple users edit the same sheet simultaneously. Track Changes mode logs every edit with a username and timestamp.
• Built-In Plugins: Connects with Moodle, WordPress, and Zapier through official plugins. Developers can build custom plugins using JavaScript.
• Advanced Formula Engine: Supports over 450 spreadsheet functions. Functions include XLOOKUP, array formulas, and full statistical toolsets.
• Self-Hosting Option: Organizations can deploy OnlyOffice on their own servers. Data stays inside the company's infrastructure, meeting strict privacy needs.

Use Cases

• For Finance Teams: Build budget models in .xlsx format without buying Microsoft licenses. Auditors review tracked changes directly inside the file.
• For Educational Institutions: Moodle integration lets teachers embed live spreadsheets inside courses. Students collaborate on assignments without installing any software.
• For Remote Teams: Real-time co-editing replaces emailing file versions back and forth. Comment threads keep all feedback inside one document.
• For IT-Conscious Enterprises: Self-hosted deployment keeps sensitive financial data off third-party clouds. Admins control access, storage, and updates internally.

OnlyOffice Spreadsheet delivers strong Excel compatibility and real-time collaboration in a self-hostable package. It suits cost-conscious teams and privacy-focused organizations, though advanced macro support may still lag behind Microsoft Excel.