Self-hosted alternatives to Google Workspace
Per-user-per-month across mail, docs and storage adds up to a permanent tax on headcount.
Below are 10 open-source projects that cover the same ground, each scored 0–100 on how actively it is actually maintained — commit volume, release cadence and recent trend. 5 of the 10 are currently rated healthy or better. Ordering reflects that score, not sponsorship.
| Project | Health | Activity (11 mo) | Stars | Licence | Last release |
|---|---|---|---|---|---|
| Nextcloud Access and share your files, calendars, contacts, mail and more from any device, on your terms. | Thriving · 98 | 37k | AGPL-3.0 | 24 Sept 2026 | |
| egroupware Software suite including calendars, address books, notepad, project management tools, client relationship mana | Healthy · 80 | 297 | GPL-2.0 | 25 Sept 2026 | |
| Sync-in File storage, syncing, sharing, and collaboration with real-time editing, permission management, and desktop/C | Healthy · 75 | 1.8k | AGPL-3.0 | 21 Sept 2026 | |
| Tine Software for digital collaboration in companies and organizations. From powerful groupware functionalities to | Healthy · 75 | 22 | AGPL-3.0 | 26 Sept 2026 | |
| Group Office Enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clie | Healthy · 72 | 280 | AGPL-3.0 | 21 Sept 2026 | |
| bewCloud File sharing + sync, notes, and photos (alternative to Nextcloud and ownCloud's RSS reader). | Steady · 58 | 1.2k | AGPL-3.0 | 13 Aug 2026 | |
| Openmeetings Video conferencing, instant messaging, whiteboard, collaborative document editing and other groupware tools us | Steady · 55 | 685 | Apache-2.0 | 14 Jul 2026 | |
| SOGo SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as | Steady · 54 | 2.2k | LGPL-2.1 | 14 Sept 2026 | |
| Seafile File hosting and sharing solution primary for teams and organizations. | Slowing · 40 | 15k | GPL-2.0 | 27 Feb 2024 | |
| Collabora Online Development Edition Collabora Online Development Edition (CODE) is a powerful LibreOffice-based online office that supports all ma | Unrated | — | MPL-2.0 | — |
How these were picked
Every project listed here is open source and can run entirely on hardware you control. We start from the categories that match Google Workspace's job — Groupware, Office Suites — then rank by health score so that a popular-but-abandoned project never appears above a smaller one that is actively shipping. The scoring method is documented in full.
The scores are recomputed from repository data on every rebuild, so this page reflects the state of these projects as of 1 Oct 2026 — not the day it was written.
Nextcloud
Access and share your files, calendars, contacts, mail and more from any device, on your terms.
Best fit: It suits individuals and organisations who want to keep their files and productivity data on their own hardware rather than relying on commercial cloud storage.
Worth knowing: Running a large PHP-based groupware suite requires careful resource tuning and regular updates to maintain security and acceptable performance.
egroupware
Software suite including calendars, address books, notepad, project management tools, client relationship management tools (CRM), knowledge management tools, a wiki and a CMS.
Best fit: Teams looking to consolidate scheduling, project tracking, and contact management into a single self-hosted environment.
Worth knowing: It covers a very broad feature set, which may introduce unnecessary complexity if you only require basic calendar or contact synchronisation.
Sync-in
File storage, syncing, sharing, and collaboration with real-time editing, permission management, and desktop/CLI clients.
Best fit: It suits teams or individuals requiring a self-hosted file management system with multi-client synchronisation and collaborative editing features.
Worth knowing: The AGPL-3.0 copyleft licence requires you to make your modified source code available if you offer the software as a network service, which may affect proprietary deployments.
Tine
Software for digital collaboration in companies and organizations. From powerful groupware functionalities to clever add-ons, tine combines everything to make daily team collaboration easier.
Best fit: Teams looking for an open-source, self-hosted alternative to mainstream commercial groupware and office coordination platforms.
Worth knowing: The ecosystem and community around the project are relatively small compared to industry giants, which may limit the availability of third-party documentation and troubleshooting resources.
Group Office
Enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients.
Best fit: Organisations looking to unify their customer relationship management and team productivity tools under a single self-hosted system.
Worth knowing: The AGPL-3.0 licence carries strict copyleft obligations if you modify and network-host the software, and adoption is much lower than competing enterprise suites.