Compare software

0xchat vs Session: catalog facts
0xchat	Session
Free The homepage does not list any price or paid tier.	Free Free and open source under the GPL 3.0, run by the Session Technology Foundation.
Android, iOS	Windows, macOS, Linux, Android, iOS
No phone number or email address needed, only a Nostr private key End-to-end encrypted direct messages and private groups	No phone number or email needed; the account is a random ID Onion routing hides your address from recipients and from the network
Losing the private key means losing the identity Contacts need a Nostr client to reach you	Losing your recovery phrase means losing the account with no reset Delivery can be slower than a centralised messenger
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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