If you've taken advantage of Groovy's syntax to design your Java applications, these posts discuss GParallelizer, a Groovy framework designed to handle concurrency using Actors. The first post by Vaclav Pech provides code samples on getting started with GParallelizer, while the second post by Alex Miller includes analysis on how GParallelizer tackles Actors compared to other languages. Read Vaclav Pech's post 'Actors in Groovy - concurrency the easy way with GParallelizer': http://www.jroller.com/vaclav/entry/groovy_actors_in_gparallelizer_concurrency Read Alex Miller's post 'Actors in Groovy': http://tech.puredanger.com/2009/01/16/actors-in-groovy/