European Google Calendar Alternatives

Tuta Calendar offers a zero-knowledge, quantum-safe encrypted solution to organize your personal and professional events, ensuring your schedule remains private and secure. All your events, invitations, and shared calendars are automatically end-to-end encrypted, meaning your data belongs only to you. Its intuitive design allows for easy planning of appointments, business meetings, and recurring tasks.

Key benefits include:

• Secure push notifications that respect your privacy, even from the OS.
• Two-factor authentication for maximum login security.
• Cross-platform availability with free open source desktop clients and mobile apps for Android, iPhone, Windows, macOS, and Linux.
• Multi-user support for securely sharing calendars with different access rights.
• Seamless integration with encrypted email and contacts for confidential communication in one place.
• A strong focus on privacy, offering an alternative to Big Tech surveillance and adhering to GDPR for business users, ensuring your sensitive information remains confidential.

Transform your browser into a complete business workspace with email, team chat, video conferencing, and document collaboration all integrated seamlessly. This EU-made platform eliminates the need for multiple tools by bringing everything together in one interface.

Key features include:

• Professional email with custom domains and ChatGPT integration for enhanced productivity
• TeamChat and video conferencing supporting up to 1,000 attendees with webinar mode
• Real-time document collaboration for creating and editing docs, spreadsheets, and presentations
• Shared calendars with appointment booking and task management
• Cloud storage with file sharing and mobile access

Choose between cloud hosting or self-hosted deployment for complete control over your data. The platform offers flexible pricing starting at $3.50/user/month and includes a 30-day free trial with full feature access.

Mobile and desktop apps ensure productivity anywhere, while managed migration services make switching from Microsoft 365, Google Workspace, or other platforms seamless. Trusted by 50,000+ businesses worldwide with 24/7 enterprise support available.

Proton Calendar offers a secure way to manage your schedule, ensuring your life remains your business. Your data belongs to you, not advertisers, thanks to robust encryption. Based in Switzerland, all user data is protected by strict Swiss privacy laws. This online calendar automatically secures all your events with end-to-end encryption, and events from other calendars are protected with zero-knowledge encryption. This means event details like title, description, location, and invitees are unreadable even by Proton.

Key features include:

• Free access: A free calendar app is available for everyone, with paid options for more features.
• Seamless integration: Works with Proton Mail for sending secure event invites and adding events from your inbox.
• Efficient scheduling: Quickly add events, modify invitations, and set multiple reminders.
• Privacy by default: Combines traditional calendar functionality with strong privacy measures.

Built by the team behind Proton Mail, the world’s largest encrypted email service, Proton Calendar is part of a suite of privacy-focused services trusted by over 100 million users.

Kolab Now offers a comprehensive and secure groupware solution, meticulously engineered and hosted in Switzerland to ensure your data privacy. This open-source platform provides a full suite of essential tools for individuals and teams, including:

• Secure Email: Robust email hosting with strong encryption and privacy features.
• Integrated Calendar: Manage your schedule, share calendars, and coordinate events seamlessly.
• Contacts Management: Keep your address book organized and accessible across devices.
• Task Lists: Stay on top of your to-dos with integrated task management.
• File Storage: Securely store and share your files within the Kolab Now environment.

Built on open standards, Kolab Now ensures interoperability and allows you to access your data using your preferred clients. It's an ideal choice for those who value data sovereignty, security, and a complete set of tools for effective collaboration and personal organization. Focus on privacy is paramount, making it a trustworthy alternative to mainstream cloud services.

mosa.cloud delivers a complete digital workspace solution that prioritizes data sovereignty and organizational control. Built on open source foundations trusted by 200,000+ French government users, this European platform offers everything teams need without compromise.

Core Features:

• Collaborative Docs with real-time editing, version history, and AI assistance
• Secure Drive storage with Collabora integration for in-browser document editing
• HD Video Meetings with automatic transcripts and action items
• Team-focused Mail with shared inboxes and AI-powered organization
• Integrated Chat via Matrix server and Element client
• Grist Spreadsheets for collaborative data management

Key Advantages:

• 100% EU-hosted with data sovereignty guarantees
• Pay-per-usage pricing instead of per-seat licensing
• Open source foundation prevents vendor lock-in
• AI assistance that respects privacy - no training on your data
• Single sign-on across all applications with external collaboration support
• Enterprise security with MFA, audit trails, and NIS2 compliance

The platform integrates seamlessly with existing identity providers while enabling secure collaboration with external partners. Built by a true European service provider, mosa.cloud combines the best open source productivity tools into a fully managed workspace solution.