ActorFX: The Actor Framework for Windows Azure
Nice to see an Actor framework from MS Open Tech designed to aid writing Azure cloud applications. Code is over on CodePlex. Channel9 earlier this year has a video worth watching on Actors – Hewitt, Meijer and Szyperski: The Actor Model (everything you wanted to know, but were afraid to ask).
It will be interesting to see how ActorFx evolves over time, and if it manages to catch up with akka over in the Java VM stack.