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CwtchSimpleX Chat
Free

The open-source application is available without a license fee.

 Free

Free and open source under the AGPL 3.0. The company is funded by investment and…

Windows, macOS, Linux, Android Windows, macOS, Linux, Android, iOS, Command line
  • Designed specifically to resist metadata collection, not just message reading
  • No account, phone number or email required
  • No user identifier of any kind, so conversations cannot be correlated by account
  • Double ratchet encryption with an additional layer for the relay servers
  • Tor routing makes delivery slow and requires both parties online
  • Small project with a limited feature set
  • Connecting means exchanging a link or QR code in person or elsewhere
  • No contact list means a lost device is a lost set of conversations unless backed up
Downloadable app Downloadable app
Open source Open source
License not stated License: AGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

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