Alternatives européennes à Outlook Calendar
Calendar integrated with Outlook and Microsoft 365. Deep sync with Teams, Word, Excel and the Microsoft ecosystem.
Fonctionnalités de Outlook Calendar
- Free with an Outlook.com account
- Sync across Teams, Office, OneDrive
- Copilot integrated into Calendar (since May 2026)
- Web, Windows/macOS desktop, Android, iOS apps
- 15 GB Outlook.com storage
- Proprietary source code
Prix : Free (with Outlook.com) / Microsoft 365 Personal from 7€/month
Pourquoi quitter Outlook Calendar ?
- Microsoft Copilot accesses your calendar by default (daily briefing, double-booking detection) since May 2026
- Microsoft Corporation is headquartered in Redmond (United States) and subject to the US CLOUD Act
- Microsoft 365 price hike of 5% to 33% effective July 2026
- Windows and Outlook telemetry enabled by default on all accounts
- Copilot improvements may use your content unless your admin explicitly opts out
Recommandé : Tuta Calendar
The most encrypted calendar on the market: titles, dates, times and guests all encrypted in zero-knowledge. Quantum-safe encryption. Dedicated standalone iOS/Android apps.
Pays : DE
Scores de compatibilité
- Migration : 80/100
- RGPD : 100/100
- Fonctions : 85/100
- Score global : 89/100
Fonctionnalités de Tuta Calendar
- Free tier available
- Quantum-safe encryption on everything (including dates/times)
- Standalone iOS/Android apps (separate from Tuta Mail)
- Bundle with E2E Mail + Calendar + Contacts
- ISO 27001 datacenters in Germany
- Open-source code
Prix : Free / Revolutionary at 3€/month / Legend at 8€/month
Pourquoi ce choix ?
Tuta Calendar is our recommendation for Outlook Calendar users thanks to its ISO 27001 certification and quantum-safe encryption on everything (titles, dates, times, guests). It's the most rigorous solution on the European compliance side, hosted in Germany and outside the CLOUD Act, without the Microsoft 365 price hike planned for July 2026.
Passer de Outlook Calendar à Tuta Calendar
Points forts
- ISO 27001 certification (like Microsoft) plus quantum-safe encryption
- No Copilot accessing your calendar by default
- Germany hosting aligned with EU Data Boundary
- Dedicated standalone iOS/Android apps
- No scheduled price hike (vs +5-33% on M365)
Points faibles
- No native Office/Teams integration
- Limited bundle (Tuta is mail + calendar only)
- More minimalist UI than Outlook
Toutes les alternatives
- Tuta Calendar (DE) — Score : 89/100 (Recommandé)
- Proton Calendar (CH) — Score : 88/100
- Infomaniak Calendar (CH) — Score : 81/100