Dear all, I uploaded threads-0.1.0.1 to hackage. Threads is a small package that lets you fork threads and wait for their result. The basic interface is simply: module Control.Concurrent.Thread where data ThreadId α forkIO ∷ IO α → IO (ThreadId α) wait ∷ ThreadId α → IO (Either SomeException α) threadId ∷ ThreadId α → Control.Concurrent.ThreadId I hope the names and types speak for themselves. Additionally the following module is provided that lets you wait for a group of threads to terminate: module Control.Concurrent.Thread.Group where data ThreadGroup new ∷ IO ThreadGroup forkIO ∷ ThreadGroup → IO α → IO (ThreadId α) wait ∷ ThreadGroup → IO () Installation: $ cabal update $ cabal install threads API docs: http://hackage.haskell.org/package/threads-0.1.0.1 Development: darcs get http://code.haskell.org/~basvandijk/code/threads Regards, Bas