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

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

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 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 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 …

Understand the basics of Signal on Android, iOS, and Desktop. Explore rich features of private messaging. This section contains common questions regarding safety and reliability of the …

Understand the basics of Signal on Android, iOS, and Desktop.

In The Signal by William Powell Frith, a woman sends a signal by waving a white handkerchief. A signal is both the process and the result of transmission of data over some media …

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

Signal Operations is responsible for the operation and timing of the traffic signals on the Highway System within the Twin Cities Metro area. The Signal Operations unit currently operates 635 …