From what I know, Friendica, Hubzilla and Mobilizon already have groups, Pleroma is planning. Am I missing any other potential candidate to eventually federate with Lemmy?
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;