Urbit - Weird ass hierarchical distributed computing framework with aspects of cultishness. Some sort of combined bytecode vm and networked server process, that is only allowed to participate in the network if your access is blessed by someone further up the hierarchy. It is riddled with jargon, has its own languages nock (the bytecode) and hoon (a higher level) which use their own sorts of conventions and their own terms to talk about them. In a sort of scientology-ish kinda way, the jargon appears to be explicitly designed to separate the in-group from others.

The whole thing was originated by a man (Curtis Yarvin) with some very questionable political views, and even though he isn't directly involved in the project any more, he seems to have baked some of them into his design of the system.

It has been around for about 13 years and is one of those "we're going to change everything!" projects that never really gets off the ground, but has a tranche of true believers.

At this point it's probably something to be filed in the same sort of mental folder as TempleOS, though with less religion and more authoritarianism.

From a quick read, 'Plunder' appears to be an attempt to use similar ideas to make a slightly more functional system. As such I'd regard it as a little like FreeZone scientology - a splinter group who can see the issue with the church, but still believe in the fundamental model for whatever reason.