scalapy/scalapy

Use the world of Python from the comfort of Scala!

outr/scribe

The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.

com-lihaoyi/utest

A simple testing framework for Scala

com-lihaoyi/cask

Cask: a Scala HTTP micro-framework

com-lihaoyi/sourcecode

Scala library providing "source" metadata to your program, similar to Python's __name__, C++'s __LINE__ or Ruby's __FILE__.

lightbend/mima

A tool for catching binary incompatibility in Scala

spotify/featran

A Scala feature transformation library for data science and machine learning

outwatch/outwatch

The Functional and Reactive Web-Frontend Library for Scala.js

zio/zio-prelude

A lightweight, distinctly Scala take on functional abstractions, with tight ZIO integration

whisklabs/docker-it-scala

Docker integration testing kit with Scala

shiftleftsecurity/codepropertygraph

Code Property Graph: specification, query language, and utilities

xebia-functional/fetch

Simple & Efficient data access for Scala and Scala.js

typelevel/jawn

Jawn is for parsing jay-sawn (JSON)

erikvanoosten/metrics-scala

The scala API for Dropwizard's Metrics.

scoverage/scalac-scoverage-plugin

Scoverage Scala Code Coverage Core Libs

disneystreaming/weaver-test

A test framework that runs everything in parallel.

zio/zio-json

Fast, secure JSON library with tight ZIO integration.

endpoints4s/endpoints4s

Describe HTTP endpoints in Scala and derive clients, servers, and documentation

arainko/ducktape

Automatic and customizable compile time transformations between similar case classes and sealed traits/enums, essentially a thing that glues your code. Scala 3 only. Or is it duct 🤔

typelevel/log4cats

Logging Tools For Interaction with cats-effect