Yeah I’ve met the Radicle people a couple times. I’ve never given it a thorough review but, for their goals, their designs have always seemed strong, and they’re pleasant people to chat with.
The main difference was atproto wanted to tackle scale, so we went with a servers & aggregation model. Radicle is going for device-to-device networking as a primary goal.
Do you think it will be possible to use them together? Having some sort of unified distributed system is intriguing to me. (e.g. can the Radical foundation and AT-proto foundation integrate, even?)