Twirl is Play's default template engine
Avro Data Source for Apache Spark
turtles, patches, and links for kids, teachers, and scientists
Microbenchmarking and performance regression testing framework for the JVM platform.
Eff monad for cats - https://atnos-org.github.io/eff
Scala at your command
I know this because build.sbt knows this.
Data structures for pure functional programming in Scala
Simplifying robust end-to-end machine learning on Apache Spark.
Service to track changes in your cloud
Modular blockchain framework. Public domain
Scala wrapper for Apache TinkerPop 3 Graph DSL
Scala library providing "source" metadata to your program, similar to Python's __name__, C++'s __LINE__ or Ruby's __FILE__.
A composable command-line parser for Scala.
Simple & Efficient data access for Scala and Scala.js
Akka, for Scala.js
WAR Plugin for Play framework 2.x
Async and clustered Scala web framework and HTTP(S) server