End-to-end encrypted, open-source collaborative office suite with real-time editing of documents, sheets, presentations, forms, kanban boards and more.
8.1K+20 this week880JavaScriptAGPL-3.0Updated yesterday
2 alternatives
2 best open-source alternatives to Microsoft Office 365 (2026)
Looking for a free, open-source alternative to Microsoft Office 365? These 2 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| cryptpad/cryptpad | ★ 8.1K | AGPL-3.0 | yesterday |
| ONLYOFFICE/DocumentServer | ★ 7.1K | AGPL-3.0 | 13 days ago |
A self-hosted collaborative online office suite with editors for documents, spreadsheets, presentations, forms and PDFs, compatible with .docx, .xlsx and .pptx.
7.1K+27 this week1.3KShellAGPL-3.0Updated 13 days ago
FAQ
- Is there a free, open-source alternative to Microsoft Office 365?
- Yes. The most popular open-source alternatives to Microsoft Office 365 on Repolode are cryptpad, DocumentServer.
- Which Microsoft Office 365 alternative should I choose?
- cryptpad has the most GitHub stars and is released under AGPL-3.0. Compare the license and last commit of each option in the table above before choosing.
How this list is made: AI reads each project's documentation to match it with products it can replace, every project passes our quality screening, and the list is ranked by GitHub stars. Stars updated Nov 7, 2026. How Repolode works