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Berty vs Jami: catalog facts
Berty	Jami
Free Free and open source, developed by a non-profit.	Free Free software under the GPLv3 or later. A GNU project with no paid tier.
Android, iOS	Windows, macOS, Linux, Android
No central server; messages travel peer to peer Designed to work offline or on restricted networks	Completely peer to peer, with no server relaying data between users No phone number or email needed to create an account
Developers say it is not yet ready for high-risk use Small team and a smaller user base than mainstream messengers	Peer-to-peer delivery means messages to an offline device wait until it reconnects Connection reliability varies more than with a server-relayed service
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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