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Briar vs Knit: catalog facts
Briar	Knit
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	Works with no internet, cell service or servers Messages relay across multiple nearby phones
Currently in maintenance mode, with limited new development Both devices must be online at the same time to exchange messages	Only reaches people within range of a chain of nearby phones Android only
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	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.