I think Hubzilla is a good candidate. Friendica requires MariaDB/MySQL. As the database guy, I have to say: 100% fail (please no discussions, we've had them all), that disqualifies it. Hubzilla seems to be more open; Diaspora as well, but i said to be difficult. What else is there? It has to be a decentralised system in any case. https://medium.com/we-distribute/the-do-everything-system-an-in-depth-review-of-hubzilla-3-0-692204177d4e Have tried an account on a public server: https://start.hubzilla.org/channel/holger_jakobs_germany medium.com - Medium – a place to read and write big ideas and important stories https://medium.com/we-distribute/the-do-everything-system-an-in-depth-review-of-hubzilla-3-0-692204177d4e