Those looking for a more bounded social network experience than what's offered by Mastodon and another existing fediverse software, might be interested in the work being done by the #Bonfire project:
http://bonfirenetworks.org/posts/introducing_boundaries/
A note of caution, this approach is not new. Diaspora is the first project I remember trying it, and Goggle built their G+ social network experiment around it, and then shut it down a few years later. I hope the Bonfire team have considered the reasons this approach to social networking UI didn't fly so far, even with all the engineering talent and money a behemoth like Goggle could throw at it.
I was initially very excited by the circle UI and the ability it gave me to segment my social network by interests, and direct my posts at the people most likely to get value from them. But if memory server, I eventually drifted away from both Diaspora and G+ because the admin overhead of managing all the circles I created ended up taking far of my more time than writing posts.
@strypey #Hubzilla (and #Mobilizon ?) have separate profiles, one for each purpose and hence circle. Hubzilla/Streams can now also combine instances to make 1 community. And they are interoperable with fediverse (like Bonfire does).
@tetrislife
> I haven't had to try Mobilizon which has more modern UI, are its profiles as difficult to use as Hubzilla's options?
I've only had a brief play with Mobilizon, so I can't really answer that question. As with most newer projects though, the UI looks more like a set of rough wireframes than a finished ready-to-use interface.