About this tool
Briar is a remarkably resilient messaging app built for absolute privacy and emergency situations. Unlike WhatsApp or Signal, Briar does not use central servers or require a phone number to sign up. Instead, it syncs messages directly between devices using the secure Tor network.
The real magic happens when the internet goes down: Briar can seamlessly switch to Bluetooth and local Wi-Fi to keep your messages flowing in a localized mesh network. If you are ever in an area with a cellular blackout or no Wi-Fi, Briar will still allow you to text anyone nearby who also has the app.