Mencius Moldbug’s Urbit system appears to be public! Take the time to read his introductory materials – you will not regret it. Any regular reader of this site will probably take some interest in Urbit.
While I disagree with many of Moldbug’s fundamental design decisions, I believe that his is the first modern ab initio redesign of computing which has made it even as far as the “rigged demo” stage. Let’s congratulate him, and learn from his work! All of which, I should note, he generously placed in the public domain.
Mr. Moldbug will be giving a public demo of his work in San Francisco, on Sept. 25. If any of my readers are able to attend, I would enjoy hearing their impressions.