Mycelia, an experimental FOSS, ocap-secure operating system by Dale Schumacher (it runs! It's also basically a scheme-based lisp machine OS) https://github.com/organix/mycelia
And part of that, ufork, a wild idea for a VM but also possibly a non-von-neumann CPU design https://github.com/organix/mycelia/blob/master/ufork.md
Dale's language Humus and Spritely Goblins are both very similar to each other, we came up with mostly the same designs independently (with a few small exceptions)
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