GDPR-compliant secure messenger from Switzerland offering end-to-end encryption, anonymous communication, and self-hosting options for businesses and individuals.

European Alternative to:

Screenshot of Threema website

Threema is a Swiss-developed secure messaging platform that prioritizes privacy and data protection above all else. Trusted by over 12 million users worldwide, this GDPR-compliant solution offers comprehensive communication security for businesses, government agencies, and individuals.

Key Features:

  • End-to-end encryption for all messages, calls, and files using open-source cryptography
  • Zero-knowledge architecture ensuring only intended recipients can access content
  • Anonymous communication without requiring phone numbers or email addresses
  • Self-hosting capabilities with Threema OnPrem for complete data sovereignty
  • Minimal metadata collection with messages deleted from servers after delivery

Business Solutions:

  • Threema Work provides centralized management for corporate teams with intuitive admin controls
  • Perfect Forward Secrecy prevents retrospective decryption even if keys are compromised
  • Swiss data protection standards with servers located exclusively in Switzerland
  • Verifiable security through open-source code and regular external audits

The platform addresses growing cybersecurity threats, with companies facing over 1,000 cyberattacks per week and potential GDPR fines up to 4% of global revenue. Threema's transparent business model relies on subscriptions rather than data monetization, ensuring no advertising, tracking, or profiling. Organizations across industries - from healthcare to military - choose Threema for reliable, uncompromised secure communication.

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Threema: European Alternative to WhatsApp and Facebook Messenger – EuroAlternative