Property-based testing for Scala
Generic programming for Scala
Powerful new number types and numeric abstractions for Scala.
Asynchronous, Reactive Programming for Scala and Scala.js.
Optics library for Scala
Native Scala mocking framework
Purely functional JSON parser and library in scala.
simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
uPickle: a simple, fast, dependency-free JSON serialization library for Scala
ScalaTags is a small XML/HTML construction library for Scala.
Generalized recursion schemes and traversals for Scala.
Jawn is for parsing jay-sawn (JSON)
The Scala API for Quantities, Units of Measure and Dimensional Analysis
Statically typed DOM API for Scala.js
A cohesive & pragmatic framework of FP centric Scala libraries
Spire's macros for zero-cost operator enrichment
Super type-safe CSS for Scala and Scala.JS.
macro-compat is a small library which allows you to compile macros with Scala 2.10.x which are written to the Scala 2.11/2 macro API.
Macros for simple/safe RPCs between Scala applications, including ScalaJS/ScalaJVM