Briar
What it's for
A peer-to-peer messenger that works with no internet: over Bluetooth, Wi-Fi Direct or Tor.
Why it matters
No server, so nothing to shut down or seize. Survives internet shutdowns and network censorship.
For whom & when
Protests, disasters, remote areas, blackouts. Android only, and both people need the app.
Install & use
Install from briarproject.org or F-Droid (no iOS).
Create a local account (nickname + password), stored only on the phone.
- Add a nearby contact by scanning their QR code, or remotely via a link.
- When the network is down, turn on Bluetooth: messages hop device to device.