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Briar vs TRIfA: catalog facts
Briar	TRIfA
Free Free and open source under the GPL.	Free Free and open source under the GPL-3.0 licence.
Linux, Android	Android
Works with no internet at all, over Bluetooth or local Wi-Fi No central server and no phone number or email needed	Peer-to-peer messaging without central servers All features free
Currently in maintenance mode, with limited new development Both devices must be online at the same time to exchange messages	Contacts must also use a Tox client Smaller user base than mainstream messengers
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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