Download Signal for Android, iOS, Linux, macOS, and Windows.

Download Signal app for Android, iOS, iPhone, iPad, iPod Touch, or Desktop for free! Get the latest version of Signal Messenger.

Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private.

Update your package database and install Signal: sudo apt update &&sudo apt install signal-desktop. 2013-2025 Signal, a 501c3 nonprofit.

Signal is the successor of the RedPhone encrypted voice calling app and the TextSecure encrypted texting program.

6 days ago · Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private.

State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else can either.

Signal Messenger User Guide Learn how to download Signal, explore its basic features, and make the most of its privacy tools and helpful tips.

Nov 20, 2025 · Signal polling: An easier way to see what your group chat really thinks and feels.

Home to the Signal Protocol as well as other cryptographic primitives which make Signal possible. Signal has 126 repositories available. Follow their code on GitHub.