0xChat

A decentralized secure messaging app built on Nostr with encrypted DMs, private groups, calls and Lightning payments.

0xChat is a decentralized secure messaging app built on the Nostr protocol. It pairs private-key login with end-to-end encrypted DMs and contacts, encrypted private groups, and voice and video calls — with Lightning payments built in.

Your identity lives on Nostr, not on a platform account; conversations are encrypted client-side. 0xChat ships for web and Android, with the app source on GitHub.