I think Tumblr has a pretty unique style in terms of how it works. Even though it’s completely centralised, it already almost feels like it’s federated. So is there an actual fediverse platform that’s similar to it?
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of “federation” and “universe”. It is a common, informal name for a federation of social network servers whose main purpose is microblogging, the sharing of short, public messages.
Getting started on Fediverse;