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Cwtch

Metadata-Resistant Messaging·cwtch.im

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Cwtch is a decentralized, privacy-preserving, multi-party messaging protocol used to build metadata-resistant applications. All communication is end-to-end encrypted and routed over Tor v3 onion services. There is no central Cwtch service or network; participants can host their own infrastructure ('safe spaces') or lend it to others. The protocol is open, allowing anyone to build bots, services, and user interfaces that integrate with it.

What it's for

Building metadata-resistant messaging applicationsHosting self-run private communication spacesMulti-party private messaging over TorBuilding bots, services, or user interfaces on the Cwtch protocol

Features 7

  • Communication over Tor v3 onion services
  • Decentralized messaging protocol
  • End-to-end encryption
  • Metadata-resistant design (no metadata exchanged without consent)
  • Multi-party messaging support
  • Open protocol for third-party bots, services, and UIs
  • Self-hosted 'safe spaces' infrastructure

At a glance

open sourceself-hostable
TypeDesktop app
DeploymentSelf-hosted
PlatformsWindows, macOS, Linux, Android
LanguagesEnglish, Español, Deutsch, Italiano
Fordevelopers
CompanyOpen Privacy Research Society

Integrations

Tor

Resources

Last checked 28 days ago·