Desert Spring-Time
   O’Caml OS; tasks (processes) run in isolation at pure software level; interprocess communication uses special efficient form of marshalling: it raises exceptions when trying to pass a value containing (or is) a closure. Description only.
   http://www.purevoid.org/

Fox Project
   OS based on ML language. Goals: advance art of programming language design and implementation, while applying principles of programming languages to advance art of systems building. Project work: theoretical studies of languages and their traits, developi
   http://www.cs.cmu.edu/~fox/