Grommunio
An open-source communication and collaboration platform that integrates email, calendars, contacts, tasks, chat, video meetings, file sharing, and online office functionalities.
Visit Grommunio ↗- CategoryEmail
- Based inAustria (AT)
- Data residencySelf-hosted (you control it)
- Open sourceYes
- Last verified8 Sep 2026 · catalog refreshed weekly
- Alternative toMicrosoft Exchange, Microsoft 365, Google Workspace
- Listed byawesome-european-ai
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