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

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 …

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

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

Nov 24, 2025 · 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.

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 …

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.

1 day ago · Hackers are now using spyware to attack WhatsApp, Signal and other messaging accounts. The new warning from America’s cyber defense agency puts messaging hacks front …

Mar 25, 2025 · Is it secure? Signal touts the privacy of its service — and experts agree it is more secure than conventional texting. But it could be hacked.