Scala 2 compiler and standard library
Compositional, streaming I/O library for Scala
The pure asynchronous runtime for Scala
Optics library for Scala
Build concurrent, distributed, and resilient message-driven apps
Distributed Tracing, Metrics and Context Propagation for applications
Fast, testable, Scala services built on TwitterServer and Finagle
Yet another configuration framework for JVM languages.
The Guardian DotCom
Context-aware Software Engineering Environment Event-driven Framework
Rule Interpreter for natural date descriptions