Google Workspace
Email, docs, drive and meetings for organisations, priced per user per month forever.
5 self-hosted replacements in this index, ranked by GitHub stars in the dataset.
Replacements
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
Group Office
Enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients.
284 stars Active
30 Oct 2026 v26.1.2
Cozy Cloud
Personal cloud where you can manage and sync your files, notes, contacts, passwords, and documents.
No repository figures recorded
Popular comparisons
The most-starred pairings among these replacements, ranked by combined GitHub stars in the dataset.