XMPP, but also Delta Chat! The Webxdc apps for Delta work in XMPP client Cheogram despite there being no cross-compatibility between the networks. It can access ordinary email servers so long as they were not set up maliciously (Apple, M$, Gmail, etc). It can do a couple things XMPP cannot, but it’s not suitable for anyone outside close friends and family. I basically only use it for email, automation, and other personal matters. XMPP is for general use and can replace Discord. The Movim project looks very cool they have a community here also join their XMPP chat. Cheogram services can connect to the regular phone network.

Ask in the Sharkey Discord (sorry that’s the only place they are) if any better forks have arisen than Sharkey yet. They’ll be frank

Which fork?

Nice, I’m gonna try that. I use SingleFile.