The Scala 3 compiler, also known as Dotty.

Lightweight, modular, and extensible library for functional programming.

Generic programming for Scala

A better build tool for Java, Scala and Kotlin: 3-6x faster than Maven or Gradle, less fiddling with plugins, and more easily explorable in your IDE

Yet another JSON library for Scala

Scala language server with rich IDE features 🚀

Functional JDBC layer for Scala.

The pure asynchronous runtime for Scala

Asynchronous, Reactive Programming for Scala and Scala.js.

Facebook's React on Scala.JS

A data access library for Scala + Postgres.

Scala combinator library for building Finagle HTTP services

Generalized recursion schemes and traversals for Scala.

Simple, expressive, and safe UI library for Scala.js

OS-Lib is a simple, flexible, high-performance Scala interface to common OS filesystem and subprocess APIs

Desugaring scala `for` without implicit `withFilter`s

Write Scala.js React apps just like you would in ES6

A composable command-line parser for Scala.

Scala CLI is a command-line tool to interact with the Scala language. It lets you compile, run, test, and package your Scala code (and more!)

A cohesive & pragmatic framework of FP centric Scala libraries

Principled code generation from OpenAPI specifications

Introduction to concepts of asynchronous and concurrent programming in Scala, based on the Cats Effect library.

A new build tool for JVM languages

https://disneystreaming.github.io/smithy4s/

Bitcoin Implementation in Scala

Type-safe general-cryptography library - https://jmcardon.github.io/tsec/

gRPC implementation for FS2/cats-effect

A foundational framework for distributed programming.

High-performance Arrow and Task in Scala

Build tool for Scala projects