julien-truffaut/monocle

Optics library for Scala

lihaoyi/scala.rx

An experimental library for Functional Reactive Programming in 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.

stanch/reftree

Automatically generated diagrams and animations for Scala data structures

fomkin/korolev

Single Page Applications running on the server side.

argonaut-io/argonaut

Purely functional JSON parser and library in scala.

vegas-viz/vegas

The missing MatPlotLib for Scala + Spark

notxcain/aecor

Pure functional event sourcing runtime

pepegar/hammock

Purely functional HTTP client

japgolly/nyaya

Random Data Generation and/or Property Testing in Scala & Scala.JS.

openmole/mgo

Purely functional genetic algorithms for multi-objective optimisation

davegurnell/checklist

Validation library for Scala.

tpolecat/tuco

Reasonable telnet server for Scala.

jcouyang/owlet

Typed Spreadsheet UI library for ScalaJS

xdotai/lens

User-friendly lens syntax for mortals. Update values inside of nested case class instances without .copy .

alonsodomin/quckoo

Fault tolerant distributed task scheduler.

kubukoz/flawless

WIP Delightful, purely functional testing no-framework. Don't even try to use it at work!

powerspace/scala-openrtb

Scala OpenRTB tools used at @Powerspace

manatki/volga

iheartradio/thomas

Another A/B test library