https://code.google.com/p/jetlang/ https://code.google.com/p/jetlang/ is a rather Go-like model, with lightweight processes (optionally backed by a thread pool)

https://code.google.com/p/jetlang/ https://code.google.com/p/jetlang/ is a rather Go-like model, with lightweight processes (optionally backed by a thread pool) and typed channels. Much less functionality than Akka but if you want low memory overhead, it's hard to beat.