Comment by davexunit

Douglas Crockford has described Misty as vaporware (hence the name), whereas at Spritely we are building and shipping things that can be used. Rather than build an entirely standalone domain specific language, our research and development builds on top of Scheme because it's a multi-paradigm language that is easy to extend to implement new paradigms (such as the actor model) thanks to the powerful macro system. Lexical scope and first-class functions make Scheme amendable to the actor model (Scheme was initially created as an exploration of the actor model) and capability security. For the latter, we are inspired by Jonathan Rees' W7: A security kernel based on the lambda calculus.

http://mumble.net/~jar/pubs/secureos/secureos.html

We are also involved in a cross-organization effort to bring capabilities to everyone (on the network, at least) called OCapN and we are seeking implementers for as many programming languages as possible.

https://ocapn.org/