Threema – open-source end-to-end encrypted voice, video and group calls

2 days ago 1

End-to-end encrypted exchange of messages, calls, and files for businesses, military, authorities, and individuals – GDPR-compliant and developed in Switzerland.

More than 8,000 organizations and over 12 million people worldwide trust Threema for secure communication.

Secure Business Messenger with Comprehensive Control

Optimize your corporate communication with Threema Work. In the intuitive management cockpit, you can configure all user permissions settings centrally. Your teams work GDPR-compliant with all the features of modern messengers – from structured group chats to encrypted voice and video calls for efficient collaboration without privacy risks.

Complete Data Sovereignty Through Self-Hosting

Rely on the highest security standards with Threema OnPrem. Operate the messenger on your own infrastructure and maintain full control over your data. Protect your company against industrial espionage and cyberattacks through a closed communication environment. Tailored to security-critical companies and organizations with strict compliance requirements.

Personal Communication with Consistent Privacy Protection

Protect your private conversations from data collection and surveillance. With Threema Private, you communicate securely and, if desired, anonymously – without providing a phone number or email address. Thanks to end-to-end encryption, chats, calls, and files remain truly confidential.

Why You Can Trust Threema

In times of data leaks and growing cyber threats, trustworthy communication is crucial. Conventional messengers often compromise your data and compliance requirements. Threema offers a secure alternative without compromise.

The Dangers of Cyberattacks

Top executives and security experts rate cybercrime as the greatest current threat to companies worldwide. The threat landscape has intensified in 2024 and 2025, with new, sophisticated attack methods and increasing financial damages.

Every 16 Minutes, a Company is Hit

In the second half of 2024, over 1,000 cyberattacks per week per company were recorded – a 30% increase compared to the previous year (Source: Check Point Research). Particularly at risk: the communications industry and critical infrastructures.

Around 10 Trillion Euros in Damage Worldwide

Each data breach costs companies an average of USD 4.9 million today (Source: IBM). The global total damage could reach the 10-trillion mark by 2025.

GDPR Violations Endanger 4% of Your Revenue

In 2023 and 2024 alone, the EU imposed over 4.5 billion euros in fines – including 1.3 billion euros for Meta (Source: Reuters). Companies risk up to 4% of their global revenue for violations.

Threema, a Leading Provider of Secure Communication

Thousands of companies from various industries rely on Threema Work daily for their secure business communication. From medium-sized businesses to international corporations and military, from authorities to healthcare facilities – Threema Work impresses with the highest security standards, intuitive operation, and reliable system stability.

Thousands of organizations trust Threema Work:

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