Cwtch

Open Privacy Research Society

About this app

Cwtch (/kʊtʃ/ - a Welsh word roughly translating to “a hug that creates a safe place”) is a decentralized,
privacy-preserving, multi-party messaging protocol that can be used to build metadata resistant applications.

- Decentralized and Open: There is no “Cwtch service” or “Cwtch network”. Participants in Cwtch
can host their own safe spaces, or lend their infrastructure to others seeking a safe space.
The Cwtch protocol is open, and anyone is free to build bots, services and user interfaces and
integrate and interact with Cwtch.

- Privacy Preserving: All communication in Cwtch is end-to-end encrypted and takes place over Tor v3
onion services.

- Metadata Resistant: Cwtch has been designed such that no information is exchanged or available to
anyone without their explicit consent, including on-the-wire messages and protocol metadata.

For more information on how Cwtch works and a guide to metadata resistant communication please
checkout the Cwtch Handbook: https://docs.cwtch.im/

Ratings and reviews

Hi there, I'm really happy that you've finally managed to get your project to spread its wings and fly👍! I and probably many other people have been waiting for an extra alternative to the countless encrypted messaging apps out there and I wish you lots of success in your endeavours. I'll give 4 stars because in the "add contact menu" the letters in the three choices aren't visible for some reason(like in purple fields for 50% for some reason) and no QR code yet to add contacts! Almost perfect!

can't create a group because the button is hidden behind my nav bar. 🤷‍♀️

Don't judge a book 📚 by it's cover! Cwtch chat app is a technical marvel, a 💎 gem! This is the best anonymous chat app for Android and has Tor integrated in it perfectly, at the lowest level. Don't let the UI fool you! It's serious business under the hood! Surveillance Resistant, anonymous, secure, open source, completely free, 3x encrypted v3 onion, meta data resistant, peer to peer, decentralized chat server free design. Nonprofit Canadian team of security researcher developers, no big funds

What’s new

- New Features:
- New Encrypted Database Backend - Forked and adopted go-sqlcipher, and migrated the C-based crypto backed to new memory-safe one based on standard, and audited go crypto.
- Memory Tagging Extension Safe - Should ensure safe memory reads and no longer result in Cwtch being killed when MTE in enabled on ARM
- Bug Fixes / Improvements:
- Cwtch is now based on Flutter 3.29
- Fixes to retry cooldown to prevent long-delays when an initial connection attempt fails.