twitter/scrooge

A Thrift parser/generator

softwaremill/tapir

Declarative, type-safe web endpoints library

akka/alpakka-kafka

Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

monix/minitest

The super light testing library for Scala and Scala.js

milessabin/macro-compat

macro-compat is a small library which allows you to compile macros with Scala 2.10.x which are written to the Scala 2.11/2 macro API.

whisklabs/docker-it-scala

Docker integration testing kit with Scala

codingwell/scala-guice

Scala extensions for Google Guice

twitter/algebird

Abstract Algebra for Scala

sbt/sbt-release

A release plugin for sbt

log4s/log4s

High-performance SLF4J wrapper for Scala.

typelevel/cats-mtl

cats transformer type classes.

disneystreaming/weaver-test

A test framework that runs everything in parallel.

ghik/silencer

Scala compiler plugin for warning suppression

reactivemongo/reactivemongo

:leaves: Non-blocking, Reactive MongoDB Driver for Scala

scalatra/scalatra

Tiny Scala high-performance, async web framework, inspired by Sinatra

scalate/scalate

Scalate is a Scala based template engine which supports HAML, Mustache and JSP, Erb and Velocity style syntaxes.

sbt/sbt-git

A git plugin for sbt

sksamuel/elastic4s

Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client