Collaboration · Germany (DE)
eGroupware
Open source groupware for businesses and teams.
The switch
Microsoft 365→eGroupwarealso replaces Google Workspace, Slack
About
eGroupware is a comprehensive open-source groupware suite offering email, calendar, contact management, project management, and a built-in chat. It provides a self-hostable solution for organizations seeking full control over their data and communication.
Why we recommend it
- Open source
- Self-hostable
- Comprehensive features
EU vs USA
eGroupware vs Microsoft 365
Side-by-side on jurisdiction, data residency, and the rules that decide who can actually read your data.
Criteria
🇪🇺 eGroupware
🇺🇸 Microsoft 365
Headquarters
Germany
Redmond, USA
Jurisdiction
Germany
USA
Data location
Germany (if self-hosted) / EU (if cloud)
Global
GDPR-native
Yes
No
CLOUD Act / FISA exposed
No
Yes
Ad tracking
No
No
End-to-end encryption
No
No
Open source
Yes
No
Ownership
Private (Stylite AG)
Microsoft Corp.
Founded
2000
2011
Compare head-to-head
eGroupware vs the US incumbents
Microsoft 365 vs eGroupware
Side-by-side decision page →
Google Workspace vs eGroupware
Side-by-side decision page →
Slack vs eGroupware
Side-by-side decision page →
See all European alternatives to Microsoft 365, Google Workspace and Slack.