Best European alternatives to Google Calendar in 2026

Tuta Calendar is a privacy-focused encrypted calendar integrated with the Tuta secure email service. It offers end-to-end encryption for all events and data, ensuring no third party can access your schedule.

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.

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.