This library is about to implement the actor model on top of the GHC's concurrency. Actors works as VM's lightweight threads and messages works with STM's channels. There is also a swarms implementation, that is, a groups of processes sharing a message box, and a mapReduce combinator implemented using swarms.
The Control.Concurrent.Actor module provides the API that mimics Erlang's concurrency primitives. See the haddocks for more details.
Timeouts? Process linking? Monitors? Kill siganl handling?
Implement the flush funtion (to show already received messages)?
Write more examples.