Eff monad for cats - https://atnos-org.github.io/eff
simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
CSV Reader/Writer for Scala
Async and clustered Scala web framework and HTTP(S) server
WAR Plugin for Play framework 2.x
Scala wrapper for Apache TinkerPop 3 Graph DSL
Microbenchmarking and performance regression testing framework for the JVM platform.
Akka, for Scala.js
Simple, fast, transparent generic derivation for typeclasses
Scala library providing "source" metadata to your program, similar to Python's __name__, C++'s __LINE__ or Ruby's __FILE__.
Scala wrapper for the Java AsyncHttpClient.
Redshift data source for Apache Spark
Storehaus is a library that makes it easy to work with asynchronous key value stores
Betamax is a tool for mocking external HTTP resources such as web services and REST APIs in your tests. The project was inspired by the VCR library for Ruby.
Docker integration testing kit with Scala
Native Scala mocking framework
Simple & Efficient data access for Scala and Scala.js
The scala API for Dropwizard's Metrics.
Data structures for pure functional programming in Scala