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 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 …

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.

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

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!

Calling options - Switch camera, microphone, or view Screen Sharing with Signal Desktop Calls Set and manage disappearing messages Screen Lock Data Usage Options (Wi-Fi & Cellular) Note to Self …

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

Welcome to the Information and Communication Technologies Defense (ICTD) Division May-2023 Army Cybersecurity Workforce Qualification and Training Newsletter Download: Army Cybersecurity …