I mean, one of the central goals of communism to abolish ownership of the means of production.

Software used to produce something of value is a resource that in a communist society should not be owned. The only way to achieve this is to let everything be opensource.

So communists clearly like the free software movement, whether inverse is true is a matter for debate.

Well, there are the fascists(exploding-heads.com) and the communists(lemmygrad.ml) for a start.

You have some national instances such as lemmy.ca, aussie.zone, feddit.de, feddit.nl, feddit.uk and feddit.it.

Beehaw is busy building their ivory tower by defederating anyone with a slightly different oppinion so i'd say they are the centrists or maybe the swiss.

Other than that the rest is pretty much the same, if you ask me.

They don't tend to last very long because of US interference. But if you don't use time as a merit but other measurable factors such education, social security or healthcare, I'd say they score at least en par if not better than SocDems.