Office suites · Updated October 2026
Microsoft Office is the Word, Excel, and PowerPoint suite for documents, spreadsheets, and slides. If you would rather own your tools, here are 4 open source alternatives to Microsoft Office, ranked by GitHub stars. Each one is free to use under its license, and you can read, change, and often self-host the code.
CryptPad is both the most popular, with 8k stars, and the most recently updated, with a commit on Oct 21, 2026.
| Project | Stars | License | Language | Last commit |
|---|---|---|---|---|
 CryptPad | 8k | AGPL-3.0 | JavaScript | Oct 21, 2026 |
 ONLYOFFICE | 5.6k | AGPL-3.0 | — | Oct 21, 2026 |
 LibreOffice | 4.5k | GPL-3.0 | C++ | Oct 21, 2026 |
 Collabora Online | 3.4k | Other | Shell | Oct 9, 2026 |
by cryptpad
Collaborative office suite, end-to-end encrypted and open-source.
by ONLYOFFICE
Open-source office suite pack that comprises all the tools you need to work with documents, spreadsheets, presentations, PDFs, and PDF forms on Windows, Linux, and macOS
by LibreOffice
Read-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip, use https://dev-www.libreoffice.org/bundles/ instead
by CollaboraOnline
Issue tracker only. Active development is on Gerrit at https://gerrit.collaboraoffice.com/.
By GitHub stars, CryptPad is the most popular open source alternative to Microsoft Office right now, with 8k stars, followed by ONLYOFFICE and LibreOffice. The best fit depends on your setup, so compare their licenses, languages, and recent activity in the table above.
Yes. All 4 projects on this page are open source, so the software itself is free to use, study, and change. Some of them also sell a hosted version or paid support.
CryptPad (last commit Oct 21, 2026), LibreOffice (last commit Oct 21, 2026), and ONLYOFFICE (last commit Oct 21, 2026) have the most recent commits. Licenses on this list include AGPL-3.0 and GPL-3.0.
