typelevel/paiges

an implementation of Wadler's a prettier printer

danielasfregola/random-data-generator

Random generator of test data in Scala based on Scalacheck and Shapeless

scalaconsultants/reactive-rabbit

Reactive Streams driver for AMQP protocol. Powered by RabbitMQ library.

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

liancheng/scalafix-organize-imports

A CI-friendly Scalafix semantic rule for organizing imports

zio/zio-nio

A small, unopinionated ZIO interface to NIO.

tailhq/dynaml

Scala Library/REPL for Machine Learning Research

bizzabo/diff

Visually compare Scala data structures with out of the box support for arbitrary case classes.

norbert-radyk/spoiwo

Scala POI Wrapper for the spreadsheet generation in Excel:

jvican/dijon

A Dynamically Typed Scala Json Library

monix/minitest

The super light testing library for Scala and Scala.js

benfradet/spark-kafka-writer

Write your Spark data to Kafka seamlessly

qifun/stateless-future

Asynchronous programming in fully featured Scala syntax.

foursquare/fsqio

A monorepo that holds all of Foursquare's opensource projects

alexarchambault/plotly-scala

Scala bindings for plotly.js

nativelibs4java/scalaxy

Compiler plugin goodies for Scala (continuation of non-OpenCL part of ScalaCL)

djspiewak/shims

Seamless interop layer between cats and scalaz

soundcloud/cosine-lsh-join-spark

Approximate Nearest Neighbors in Spark

xerial/larray

Large off-heap arrays and mmap files for Scala and Java

hrj/abandon

:relieved: Simple and Robust Accounting