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

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 …

Signal users can send private messages and make secure calls to other Signal users anywhere in the world for free over the internet. All Signal-to-Signal communication is private and end-to …

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.

Mar 25, 2025 · Unlike other popular messaging apps, Signal is operated by a non-profit called the Signal Technology Foundation rather than a for-profit tech giant like Meta, which owns popular …

Signal is now developed by Signal Messenger LLC, a software company founded by Moxie Marlinspike and Brian Acton in 2018, which is wholly owned by a tax-exempt nonprofit …

Understand the basics of Signal on Android, iOS, and Desktop.

To use the Signal desktop app, Signal must first be installed on your phone.

Understand the basics of Signal on Android, iOS, and Desktop. Explore rich features of private messaging. This section contains common questions regarding safety and reliability of the …

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