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 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 …

Dec 19, 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.

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.

Dec 19, 2025 · Signal is a messaging app that’s known for its privacy, but what does it actually offer? This guide covers everything you need to know about Signal and its core features. We …

With our flagship product, Signal Messenger, we believe championing user privacy means keeping your data out of anyone’s hands, including our own, rather than “responsibly” …

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

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

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