head to head
Microsoft 365 vs LibreOffice
LibreOffice is the open source alternative to Microsoft 365 — office suite and cloud services. Here is the honest comparison.
Yes — LibreOffice is a viable free replacement for Microsoft 365. LibreOffice is open source under GPL-3.0, written in C++, with 4,373 GitHub stars, 945 forks and 0 open issues; it was last pushed 4 hours ago. Microsoft 365 costs from $6, while self-hosting LibreOffice carries no licence fee — the trade is your operational time instead of a subscription. 1 other open source Microsoft 365 alternative is tracked here, led by Nextcloud at 36,828 stars. LibreOffice ranks #2 of 2 tracked open source Microsoft 365 alternatives by stars. The tracked set, by adoption: Nextcloud (36,828 stars). Replacement criteria on this page: 4 reasons to move to LibreOffice and 3 reasons to stay on Microsoft 365.
choose LibreOffice if
- Your Microsoft 365 bill is growing with seats or usage
- You need your data in a format and server you control
- Your compliance posture requires auditing the code that touches sensitive data
- You have (or can rent) a server and basic Docker comfort
stick with Microsoft 365 if
- You need the polished onboarding and support SLAs of a commercial vendor
- Your team has zero capacity to operate software, even self-hosted-simple
- You depend on a Microsoft 365 integration ecosystem that the OSS alternatives have not replicated
Side by side
| LibreOffice (open source) | Microsoft 365 | |
|---|---|---|
| Price | Free (self-hosted) | $6-$22/user/month |
| License | GPL-3.0 | Proprietary |
| Source code | Public, auditable | Closed |
| Self-hosting | Yes — libreoffice/core | Cloud only |
| Data ownership | Your server, your format | Vendor's cloud |
| Community | ★ 4.4K · ⑂ 945 | — |
| Built with | C++ | — |
Why people look for a Microsoft 365 alternative
About LibreOffice
LibreOffice is an integrated office suite written in C++ and distributed under GPL 3.0. It lives in the open source productivity and office suite ecosystem, and it positions itself as an open alternative to Microsoft 365. The Document Foundation backs the project as a community of enterprises, developers, and volunteers.
read the full LibreOffice overview →
Other open source alternatives to Microsoft 365
last updated nightly · ranking method: github stars, live-tracked
Frequently asked questions
Is LibreOffice a good replacement for Microsoft 365?
LibreOffice is an open source alternative to Microsoft 365 (Office suite and cloud services). It is written in C++ and licensed under GPL-3.0, with 4,373 GitHub stars.
Is LibreOffice free compared to Microsoft 365?
Yes. LibreOffice is open source — there is no licence fee, and you can self-host it. Microsoft 365 is typically a paid subscription, so the trade-off is licence cost against the operational work of running it yourself.
How do I migrate from Microsoft 365 to LibreOffice?
Migration effort depends on the data formats involved. Check LibreOffice's documentation for import options, and compare the feature table above to confirm the capabilities you depend on are covered before switching.