Top pick · highest health
CryptPad
Collaboration suite built to enable collaboration, synchronizing changes to documents in real time.
DockerNodejs
Office Suites
Open source alternatives to Microsoft Office 365
We track 5 open-source Microsoft Office 365 alternatives, of which 3 currently score 70 or above on Repoly's GitHub health scale and 2 ship a Docker image. CryptPad leads on health at 96/100 with 297 commits in the last 90 days; across all 5 projects you are choosing between AGPL-3.0, GPL-2.0, MPL-2.0.
updated Oct 2026 5 alternatives best health 96 ★ 53k combined 4,798 commits / 90d 2 with Docker
Top picks to replace Microsoft Office 365
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Healthiest
Health 96/100: 297 commits in 90 days, latest release 2026.10.0, Docker image available.
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Most starred
37,351 stars, the biggest community among Microsoft Office 365 alternatives.
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Permissive licence
Collabora Online Development Edition
MPL-2.0, so you can fork or embed it without publishing changes; health 10/100.
Showing 5 of 5 tools
All 5 Microsoft Office 365 alternatives, ranked by health
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Nextcloud
Access and share your files, calendars, contacts, mail and [more](https://apps.nextcloud.com/) from any device, on your terms.
PHPdeb -
egroupware
Software suite including calendars, address books, notepad, project management tools, client relationship management tools (CRM), knowledge management tools, a wiki and a CMS.
PHP -
ONLYOFFICE
Office suite that enables you to manage documents, projects, team and customer relations in one place.
DockerNodejs -
Collabora Online Development Edition
Collabora Online Development Edition (CODE) is a powerful LibreOffice-based online office that supports all major document, spreadsheet and presentation file formats, which you can integrate in your own infrastructure.
C++
Microsoft Office 365 alternatives compared
CryptPad edges Nextcloud 96 to 88, and most of the difference is Docker support: a Docker image against no Docker image. Nextcloud is the busier codebase, though, with 2,445 commits in 90 days to 297. Nextcloud has the largest following at 37k stars, yet ranks #2 of 5, held back mostly by Docker support (no Docker image).
The most recent release is CryptPad 2026.10.0, published 9 days ago. None of the measured options scores under 40. By stack, Nodejs (2), PHP (2) and C++ (1) are the most common. Collabora Online Development Edition is permissively licensed; CryptPad, Nextcloud, egroupware and 1 more are copyleft. Collabora Online Development Edition is not hosted on a forge Repoly can read, so it has no measured score yet.
| Tool | Health | Stars | Licence | Last commit | Docker |
|---|---|---|---|---|---|
| CryptPad Up 35 points since 11 Sep | 96 | 8k | AGPL-3.0 | 2 days ago | Yes |
| Nextcloud Steady at 88 since 11 Sep | 88 | 37k | AGPL-3.0 | today | No |
| egroupware Steady at 80 since 11 Sep | 80 | 301 | GPL-2.0 | today | No |
| ONLYOFFICE Up 6 points since 11 Sep | 69 | 7.1k | AGPL-3.0 | 4 days ago | Yes |
| Collabora Online Development Edition | 10 | 0 | MPL-2.0 | unknown | No |
Microsoft Office 365 alternatives: common questions
What is the most maintained open source alternative to Microsoft Office 365?
CryptPad scores highest at 96/100, with 297 commits in the last 90 days, 8k stars on GitHub and its latest release (2026.10.0) published 9 days ago. Nextcloud has the most raw commit activity at 2445 commits in 90 days.
Which Microsoft Office 365 alternatives use a permissive licence?
1 of 5 are permissively licensed (MIT, Apache, BSD or similar): Collabora Online Development Edition (MPL-2.0). 4 use copyleft licences such as GPL or AGPL, which require you to publish changes if you distribute a modified version.
Which Microsoft Office 365 alternatives run in Docker?
2 of 5 publish a Docker image or Compose file: CryptPad, ONLYOFFICE. Docker support contributes 10 of the 100 available health points, because it is the clearest signal that self-hosting is a supported path rather than an afterthought.
Is CryptPad or Nextcloud the better Microsoft Office 365 alternative?
On measured health CryptPad leads, 96 to 88. CryptPad has 297 commits in 90 days, 8k stars and 2026.10.0 from 9 days ago; Nextcloud has 2,445 commits in 90 days, 37k stars and v33.0.10 from 15 days ago. Nextcloud is ahead on stars, so it is the stronger pick if that is what you weigh most.
Are the Microsoft Office 365 alternatives still maintained?
3 of the 4 measured options score 70 or above. Every measured option had commits in the last 90 days. None scores under 40.
What languages are the Microsoft Office 365 alternatives written in?
Nodejs: CryptPad and ONLYOFFICE. PHP: Nextcloud and egroupware. C++: Collabora Online Development Edition. The stack matters if you plan to extend or patch the tool yourself.
