The purely functional runtime system for Scala
Simple, fast, debuggable generic derivation for typeclasses
Seamless interop layer between cats and scalaz
cats transformer type classes.
Functional programming toolbox https://tinkoffcreditsystems.github.io/tofu
Principled, fast, typeclass derivation.
Tiny independent libraries with a single purpose, often a single class
Purely functional testing in Scala
Scalaz typeclasses <~> Playframework2 typeclasses
A BSON libary for scala using typeclasses
Date and time types and instances