Alpakka is a Reactive Enterprise Integration library for Java
Scala Scripting
Simple and distributed Machine Learning
Scala combinator library for building Finagle HTTP services
Spark Cool Play: Spark source code analysis, Spark class library, etc.
Asynchronous, Reactive Programming for Scala and Scala.js
Reactive Microservices for the JVM
Learn continuous vector embeddings for nodes in a graph using biased R
High performance websocket servers implemented by Spray-can
Java-based scientific graphics