The Scala Library Index

Scala Versions

Scala 3.x

2300 projects

Scala 2.13

3539 projects

Other versions: 2.12 2.11 2.10

Platforms

Scala.js 1.x

1022 projects

Other versions: 0.6

Scala Native 0.5

342 projects

Other versions: 0.4 0.3

Build Tool Plugins

sbt 2.x

85 projects

Other versions: 1.x 0.13 2.0.0-M4 2.0.0-M3 2.0.0-M2 2.0.0-M1

Mill 0.12

4 projects

Other versions: 0.11 0.10 0.9 0.7 0.6

Recent projects

kubuszok/lls

Low-Level Scala - allocation conscious cross-platform utilities

17 May 2026 at 12:25 (UTC)

scala-tessella/dcel

Build, edit and analyse edge-to-edge tessellations of unit-side polygons in Scala 3, on top of a Doubly Connected Edge List (DCEL).

17 May 2026 at 11:39 (UTC)

kubuszok/sbt-kubuszok

16 May 2026 at 17:31 (UTC)

edadma/wasm

A WebAssembly interpreter for Scala 3 with a WASI Preview 1 host shim and a small CLI

15 May 2026 at 11:44 (UTC)

sake92/deder

Config based client-server JVM build tool

15 May 2026 at 10:50 (UTC)

hshn/yoshi

15 May 2026 at 10:13 (UTC)

rchillyard/gambit

A Scala 3 framework for game-playing tree search and reinforcement learning.

12 May 2026 at 23:53 (UTC)

clulab/nxmlreader

11 May 2026 at 03:27 (UTC)

edadma/oniguruma

10 May 2026 at 20:26 (UTC)

spark-redshift-community/spark-redshift

Performant Redshift data source for Apache Spark

10 May 2026 at 12:01 (UTC)

polyvariant/scala-cli-sbt-plugin

POC of an sbt plugin built without sbt.

08 May 2026 at 02:04 (UTC)

swaldman/trivial-template

08 May 2026 at 00:38 (UTC)

More ...

Most depended-upon Projects

scala/scala

Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3

19 Jan 2012 at 19:48 (UTC)

scalatest/scalatest

A testing tool for Scala and Java developers

22 Dec 2012 at 03:43 (UTC)

scala/scala3

The Scala 3 compiler, also known as Dotty.

09 Jun 2016 at 13:04 (UTC)

scala-js/scala-js

Scala.js, the Scala to JavaScript compiler

14 Jan 2014 at 19:54 (UTC)

typelevel/cats

Lightweight, modular, and extensible library for functional programming.

05 Feb 2016 at 02:53 (UTC)

typelevel/scalacheck

Property-based testing for Scala

07 Apr 2013 at 13:37 (UTC)

akka/akka-core

A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

22 Dec 2012 at 13:22 (UTC)

circe/circe

Yet another JSON library for Scala

10 Aug 2015 at 02:04 (UTC)

etorreborre/specs2

Software Specifications for Scala

13 Jun 2012 at 22:50 (UTC)

typelevel/cats-effect

The pure asynchronous runtime for Scala

21 Apr 2017 at 23:00 (UTC)

scalameta/munit

Scala testing library with actionable errors and extensible APIs

11 Jan 2020 at 22:03 (UTC)

lightbend/config

configuration library for JVM languages using HOCON files

13 Apr 2012 at 03:51 (UTC)

More ...