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Briar vs Chitchatter: catalog facts
Briar	Chitchatter
Free Free and open source under the GPL.	Free No paid plan is mentioned on the site.
Linux, Android	Web
Works with no internet at all, over Bluetooth or local Wi-Fi No central server and no phone number or email needed	Runs in the browser with nothing to install Peer-to-peer design without a central chat server
Currently in maintenance mode, with limited new development Both devices must be online at the same time to exchange messages	No history, so it is not suited to ongoing conversations Participants need to be online at the same time
Downloadable app	Web application
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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