Right now I\'m looking at Play Framework and like it a lot. One of the parts heavy advertised amongst the features offered in Play is Akka.
In order to better understand
Akka is a toolkit and runtime for building concurrent & distributed systems. To achieve this, Akka use Actor model. If you are looking for an alternative for Akka, i think you can not find a complete solution like Akka, because Akka have several features that enable you to develop robust concurrent & distributed system:
But i suggest to take a look at Erlang/OTP and Quasar.