Group Office
Enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients.
Self-hosted alternative to
- Website
- https://www.group-office.com
- Source code
- https://github.com/Intermesh/groupoffice/
- GitHub stars
- 284
- Repository activity
- 30 October 2026
- Latest release
- v26.1.2, 30 October 2026
- Health
- Active From the repository record in this build
- License
- AGPL-3.0
- Platforms
- PHP
- Categories
- Groupware, Customer Relationship Management (CRM)
Other replacements for Google Workspace, the most-covered here
Nextcloud
Access and share your files, calendars, contacts, mail and more from any device, on your terms.
37,389 stars Active
2 Nov 2026 v35.0.2
Mailcow
Mail server suite based on Dovecot, Postfix and other software, that provides a modern Web UI for administration.
13,728 stars Active
21 Oct 2026 2026-10
SOGo
SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface.
2,182 stars Active
1 Nov 2026 SOGo-5.12.12
Cozy Cloud
Personal cloud where you can manage and sync your files, notes, contacts, passwords, and documents.
No repository figures recorded
