non/spire

Powerful new number types and numeric abstractions for Scala.

julien-truffaut/monocle

Optics library for Scala

monix/monix

Asynchronous, Reactive Programming for Scala and Scala.js.

slamdata/matryoshka

Generalized recursion schemes and traversals for Scala.

frees-io/freestyle

A cohesive & pragmatic framework of FP centric Scala libraries

travisbrown/iteratee

Iteratees for cats

kailuowang/mainecoon

Transform and compose tagless final encoded algebras in scala

typelevel/catalysts

non/alleycats

Cats instances and classes which are outlaws, miscreants, and ne'er-do-wells.

stew/dogs

data structures for pure functional programming in scala. see the completely incomplete documentation website:

nrinaudo/kantan.codecs

Generic encoders / decoders for the various kantan libraries.

julienrf/faithful

Lightweight Scala.js promise implementation that does not violate parametricity

alexknvl/newtypes

nrinaudo/kantan.regex

Regular expression library for Scala

nrinaudo/kantan.xpath

XPath wrapper for Scala

mdedetrich/cats-check

Cats instances for ScalaCheck data types

mboogerd/united-streams

denisrosset/consolidate

Data consolidation algebra for Scala