This channel is available for all Akka enthusiasts—newbies as well as gurus—for the exchange of knowledge and the coordination of efforts around Akka. For more info see: http://bit.ly/akka-gitter
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
Chat for Scala-lovers
JVM version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.
Frege is a pure functional programming language for the JVM in the spirit of Haskell.
A node.js compatible framework running on the JVM.
JUG Milano - http://www.jugmilano.it/ Il canale di Gitter dedicato al JVM User Group