Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
An OSGI container framework in Scala with focus on testing and integration testing.
Kanadi is a Nakadi client for Scala
Some useful graph shapes of akka-stream for OAuth2
Reservoir sampling implementation with akka-streams support
Akka-Stream based Memached Client for Scala
Adapt netty transport to akka-stream
Streaming library for old versions of Cassandra