Colibri – chat platform built on the AT Protocol for communities big and small https://colibri.social/

It's vibe coded https://github.com/colibri-social/appview

There's also this irresponsible mess here where they claimed it supported private messages when that literally is not supported in the protocol. They did retract that now, I am guessing that text was also slop https://news.ycombinator.com/item?id=47533862