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Best European alternatives to Tutanota Calendar in 2026

We found 2 EU-built alternatives to Tutanota Calendar — GDPR-native, with verified data sovereignty and transparent rankings. No pay-to-win.

2 EU-built alternatives to Tutanota Calendar
Nextcloud Calendar

Nextcloud Calendar

Scheduling
EU Mentions

Nextcloud Calendar is an open-source CalDAV-based calendar app integrated into the Nextcloud platform. It allows users to manage personal and shared calendars, schedule events, and sync across devices while keeping data self-hosted.

DE
Proton Calendar

Proton Calendar

Scheduling
EU Mentions

Proton Calendar is a privacy-focused calendar app that uses end-to-end encryption to protect your schedule and personal data. It supports cloud sync, reminders, and integrations across web, Android, and iOS platforms.

CH

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