Principled Functional Programming in Scala
Compositional, streaming I/O library for Scala
The standard Scala XML library
Native Scala mocking framework
A minimal, idiomatic Scala interface for HTTP
simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
Scala testing library with actionable errors and extensible APIs
A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable
ScalaTest + ScalaCheck provides integration support between ScalaTest and ScalaCheck.
A simple testing framework for Scala
Add-on module for Jackson (https://github.com/FasterXML/jackson) to support Scala-specific datatypes
ZIO — A type-safe, composable library for async and concurrent programming in Scala
command line options parsing for Scala
A type-safe, reflection-free, powerful enumeration implementation for Scala with exhaustive pattern match warnings and helpful integrations.
Your favorite language gets closer to bare metal.
Asynchronous, Reactive Programming for Scala and Scala.js.
A Java 8 compatibility kit for Scala.
uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala