What do you mean? This just uses ActivityPub to communicate, which the vast majority of fediverse servers support natively.

Yeah, I’m surprised there aren’t any others at this point. Especially considering activitypub has been around for 5 years

This is a Fediverse client that I’ve been working on. It is structured like an RSS reader, so it doesn’t require a server. This means you don’t have to worry about defederation, servers going down etc. Let me know what you think.