Vert.x

Vert.x is the framework for the next generation of asynchronous, effortlessly scalable, concurrent applications. Vert.x is a framework which takes inspiration from event driven frameworks like node.js, combines it with a distributed event bus and sticks it all on the JVM - a runtime with real concurrency and unrivalled performance. Vert.x then exposes the API in JavaScript, CoffeeScript, Ruby, Python, Groovy and Java.