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Keet vs Briar: catalog facts
Keet	Briar
Free Free to download and use.	Free Free and open source under the GPL.
Windows, macOS, Linux, Android, iOS	Linux, Android
No phone number or email needed to sign up Messages, calls and files go directly between peers with end-to-end encryption	Works with no internet at all, over Bluetooth or local Wi-Fi No central server and no phone number or email needed
Losing the 24-word seed phrase can mean losing access to your identity Peer-to-peer design depends on participants' devices rather than a server	Currently in maintenance mode, with limited new development Both devices must be online at the same time to exchange messages
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.