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Briar vs qTox: catalog facts
Briar	qTox
Free Free and open source under the GPL.	Free Free and open source under the GPL.
Linux, Android	Windows, macOS, Linux
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 encrypted messaging without a central server Voice, video and file transfer in one client
Currently in maintenance mode, with limited new development Both devices must be online at the same time to exchange messages	Contacts must also use Tox 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	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 22, 2026	Official website Full listing and sources Checked September 23, 2026

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