Compare software

0xchat vs nospeak: catalog facts
0xchat	nospeak
Free The homepage does not list any price or paid tier.	Free Free and open source.
Android, iOS	Android
No phone number or email address needed, only a Nostr private key End-to-end encrypted direct messages and private groups	No central server; uses Nostr relays End-to-end encrypted conversations
Losing the private key means losing the identity Contacts need a Nostr client to reach you	Small project with a small user base Requires contacts who also use Nostr
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
No account 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 October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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