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Jami vs 0xchat: catalog facts
Jami	0xchat
Free Free software under the GPLv3 or later. A GNU project with no paid tier.	Free The homepage does not list any price or paid tier.
Windows, macOS, Linux, Android	Android, iOS
Completely peer to peer, with no server relaying data between users No phone number or email needed to create an account	No phone number or email address needed, only a Nostr private key End-to-end encrypted direct messages and private groups
Peer-to-peer delivery means messages to an offline device wait until it reconnects Connection reliability varies more than with a server-relayed service	Losing the private key means losing the identity Contacts need a Nostr client to reach you
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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