typelevel/mouse

A small companion to cats

playframework/play-json

The Play JSON library

typelevel/algebra

Experimental project to lay out basic algebra type classes

typelevel/discipline

Flexible law checking for Scala

scalameta/munit

Scala testing library with actionable errors and extensible APIs

typelevel/natchez

functional tracing for cats

gnieh/diffson

A scala diff/patch library for Json

typelevel/cats-mtl

cats transformer type classes.

typelevel/cats-tagless

Library of utilities for tagless final encoded algebras

alexarchambault/case-app

Type-level & seamless command-line argument parsing for Scala

scala/scala-xml

The standard Scala XML library

scalaprops/scalaprops

property based testing library for Scala

alexarchambault/scalacheck-shapeless

Generation of arbitrary case classes / ADTs instances with scalacheck and shapeless

typelevel/cats-parse

A parsing library for the cats ecosystem

zio/zio-config

Easily use and document any config from anywhere in ZIO apps

comcast/ip4s

Defines immutable, safe data structures for describing IP addresses, multicast joins, socket addresses and similar IP & network related data types

com-lihaoyi/pprint

Pretty-printing value, types and type-signatures in Scala

com-lihaoyi/fansi

Scala/Scala.js library for manipulating Fancy Ansi colored strings

scala/scala-collection-compat

makes some Scala 2.13 APIs (primarily collections, also some others) available on 2.11 and 2.12, to aid cross-building

typelevel/paiges

an implementation of Wadler's a prettier printer