# Signal Desktop

Signal Desktop is the computer app for the Signal messenger. It links to Signal on an Android phone or iPhone, and the phone scans a QR code that Signal Desktop shows to pair them. Once linked, you can send and receive messages from your computer, and your chats and the last 45 days of media can sync from the phone. Signal uses end-to-end encryption built on the open source Signal Protocol.

## Supported Operating Systems

- Windows
- macOS
- Linux

## Supported Versions

Signal Desktop

## Keep Signal Desktop updated with Automox.

Tired of using multiple tools to patch your systems? Patch them all, automatically, from a single platform.

[How it works](/content/solutions/outcomes/automated-software-patching/index.html)

## Ready to untangle third-party patching?

Automate your patching in minutes with a free trial.