Offline / Mesh / tool record

official source attached

Briar

P2P encrypted messenger over Bluetooth/Wi-Fi — no servers, so there's nothing to shut down.

When it matters

Field note.

NOTING / USE CASE

Became a lifeline during Iran's January 2026 shutdown that cut off 85M+ people.

Limits

Read this before relying on it.

Source

Inspect the project itself.

projectBriar
categoryOffline / Mesh
official URLhttps://briarproject.org ↗
catalog posturechosen is not endorsed