[gtani]

There's been a lot of projects, of which the ocamlnet/netmulticore and Jane St async's are (I think, but not very confidently) the only current. Others are:

poly/ML, ocamlP3, OC4MC, functory, JoCaml

coThreads, LWT

http://www.reddit.com/r/programming/comments/q9cro/real_worl...

http://stackoverflow.com/questions/6588500/what-is-the-state...