I am a Collaborator in Mastodon and am involved in the development. We also develop and operate our own forks and activity relays.
I love Fediverse, which self-hosts services and connects with each other based on protocols, rather than existing platforms.
Note: I read and write English with the help of machine translation. I am correcting the part where the translation is wrong as far as I can understand, but please forgive me if the meaning does not understand or it has the wrong meaning.