Signal Messenger

Open-source secure encrypted messaging and calling app

Screenshots

Hunter's comment

If you care about your privacy, and you should, you use only encrypted open-source messaging platforms.

Signal Messenger by Open Whisper Systems is exactly that.

Use anything by Open Whisper Systems.
Edward Snowden, Whistleblower and privacy advocate

The app, which is available freely for Android, iOS, and as a desktop module is 100% open-source and everybody can peer review the code in the Signal Github repos, thus guaranteeing optimal peer-reviewed security standards.

Features:

End-to-end encrypted messaging
High quality worldwide calls and video calls
Time limited messaging (disappearing messages)
Cross-platform
Open-source
Free

After reading the code, I literally discovered a line of drool running down my face. It’s really nice.
Matt Green, Cryptographer, Johns Hopkins University

Download Signal freely for Android, for iOS or for Desktop