The closest open-source, distributed option I know of is Friendica; https://friendi.ca/ https://friendi.ca/ Of course, there is room for improvement in the Fr

The closest open-source, distributed option I know of is Friendica; https://friendi.ca/ https://friendi.ca/ Of course, there is room for improvement in the Friendica UX, but it still seems like a viable option for federated social network. The Friendica devs seem to strive for interoperability with other networks and support open standards for the social Internet.