typelevel/cats

Lightweight, modular, and extensible library for functional programming.

finagle/finch

Scala combinator library for building Finagle HTTP services

non/spire

Powerful new number types and numeric abstractions for Scala.

julien-truffaut/monocle

Optics library for Scala

quasar-analytics/quasar

Quasar Analytics is a general-purpose compiler for translating data processing and analytics over semi-structured data into efficient plans that run 100% in the target infrastructure.

slamdata/matryoshka

Generalized recursion schemes and traversals for Scala.

frees-io/freestyle

A cohesive & pragmatic framework of FP centric Scala libraries

typelevel/algebra

Experimental project to lay out basic algebra type classes

stew/dogs

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

typelevel/cats-tagless

Library of utilities for tagless final encoded algebras

monix/minitest

The super light testing library for Scala and Scala.js

djspiewak/shims

Seamless interop layer between cats and scalaz

pepegar/hammock

Purely functional HTTP client

travisbrown/catbird

Birds and cats together

kailuowang/mainecoon

Transform and compose tagless final encoded algebras in scala

alonsodomin/cron4s

Cross-platform CRON expression parsing for Scala

circe/circe-config

Yet another Typesafe config Scala wrapper powered by circe

alexknvl/newtypes

christopherdavenport/cormorant

A CSV Handling Library for FP.

axlelang/axle

Axle Domain Specific Language for Scientific Cloud Computing and Visualization