Proton Calendar
End-to-end encrypted calendar from Switzerland-based Proton.
Visit Proton Calendar ↗- CategoryProductivity
- Based inSwitzerland (CH)
- Data residencyEU / EEA
- Open sourceNo
- Last verified14 Jun 2026 · catalog refreshed weekly
- Alternative toGoogle Calendar
- WikipediaProton Calendar on Wikipedia ↗
- Listed bygricker.eu (curated)
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