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 corporation called the …

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

What sets Signal apart is our human-first approach to security. We honor the communities we serve by showing up with integrity, transparency, and consistent follow-through.

Dec 8, 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.

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.

Dec 3, 2025 · A Pentagon watchdog has determined that Defense Secretary Pete Hegseth risked the safety of U.S. servicemembers by sharing sensitive military information on the Signal messaging …

To use the Signal desktop app, Signal must first be installed on your phone. Not on Windows?

Signal, the software at the center of the leak Signal, a mobile messaging app, gained popularity among the general public, particularly after the 2024 Chinese telecommunications breach, thanks to features …

At Signal of Tampa Bay, we deliver custom security solutions combining technology with local expertise. We serve residential, commercial, and industrial clients with proactive protection and visible deterrence.