Directory › Alternatives to Google Calendar

European & open-source alternatives to Google Calendar

5 European and open-source alternatives to Google Calendar — privacy-friendly tools built and hosted in Europe.

Updated 9 Sep 2026 · refreshed weekly

Swiss enterprise appointment-scheduling platform from Bern with resource management, multi-location support and video…

EteSync provides secure, end-to-end encrypted, and privacy-respecting synchronization for contacts, calendars, tasks, and notes…

German meeting scheduling platform from Cologne pairing Calendly-style booking with CRM integration and lead qualification…

End-to-end encrypted calendar from Switzerland-based Proton.

German privacy-first scheduling platform from Berlin and a Calendly alternative, with booking pages, round-robin scheduling and…