I've been working on a decentralized group chat called River[1], which will be the first truly decentralized group chat and the flagship application on Freenet[1], a general purpose platform for decentralized apps.

Just 2 or 3 bugs remaining before people can start playing with both River and Freenet which hopefully means we're days away (touch wood).

[1] https://github.com/freenet/river [2] https://freenet.org/