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Session vs 0xchat: catalog facts
Session	0xchat
Free Free and open source under the GPL 3.0, run by the Session Technology Foundation.	Free The homepage does not list any price or paid tier.
Windows, macOS, Linux, Android, iOS	Android, iOS
No phone number or email needed; the account is a random ID Onion routing hides your address from recipients and from the network	No phone number or email address needed, only a Nostr private key End-to-end encrypted direct messages and private groups
Losing your recovery phrase means losing the account with no reset Delivery can be slower than a centralised messenger	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
Works offline	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.