I am actually working on a GoToSocial instance open to F-hub.org members here: https://social.f-hub.org
I just need to complete the Oauth2 account integration and make a link to my Phanpy web-client for people preferring to use it in a browser. GoToSocial itself only has a read-only web-interface, but exposes the full Mastodon API for native client use.
The idea is mainly to have Fediverse announcement accounts for hosted projects, but if someone wants to run their personal Fediverse account there, that's also fine.
GoToSocial has the nice feature that you can customize your account page with CSS (a bit MySpace like), making it quite nice as a news page for projects as well. And RSS support seems very good as well for those preferring that.