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

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 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 corporation called the …

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 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-end encrypted.

Signal is committed to your privacy. Signal runs on donations as a nonprofit. Donate here!

How do I ensure Signal is up to date? How do I know my communication is private?

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

At Signal of Corpus Christi, we deliver custom security solutions combining technology with local expertise. We serve residential, commercial, and industrial clients with proactive protection and …