The Scala Library Index

Scala Versions

Scala 3.x

2143 projects

Scala 2.13

3528 projects

Other versions: 2.12 2.11 2.10

Platforms

Scala.js 1.x

976 projects

Other versions: 0.6

Scala Native 0.5

253 projects

Other versions: 0.4 0.3

Build Tool Plugins

sbt 2.x

43 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

herminiogg/shexml-streaming

A streaming wrapper for ShExML with support for asynchronous data streams

06 Oct 2025 at 13:59 (UTC)

dragonfly-ai/img

A Scala.js Image Processing Library

05 Oct 2025 at 16:26 (UTC)

pjfanning/pekko-serialization-jackson3

Jackson 3 equivalent of pekko-serialization-jackson

04 Oct 2025 at 21:55 (UTC)

mateuszkubuszok/hearth

The first Scala macros' standard library.

02 Oct 2025 at 22:48 (UTC)

jatcwang/iohandle

24 Sep 2025 at 20:09 (UTC)

malliina/logstreams

A log streamer

19 Sep 2025 at 18:17 (UTC)

h8io/sbt-scoverage-summary

Scoverage summary for GitHub comments

09 Sep 2025 at 16:33 (UTC)

scafi/scafi3

05 Sep 2025 at 16:32 (UTC)

h8io/sbt-dependencies

SBT dependencies helpers

01 Sep 2025 at 16:54 (UTC)

chili-piper/scala-quartz

tiny wrapper around Quartz

01 Sep 2025 at 11:48 (UTC)

dragonfly-ai/uriel

Scala.js library to manipulate and analyze colors and color spaces.

01 Sep 2025 at 04:14 (UTC)

johnhungerford/kyo-test

API and adapters for testing Kyo effects using popular Scala testing frameworks

25 Aug 2025 at 21:24 (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

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)

lightbend/config

configuration library for JVM languages using HOCON files

13 Apr 2012 at 03:51 (UTC)

apache/spark

Apache Spark - A unified analytics engine for large-scale data processing

24 Jan 2014 at 07:19 (UTC)

More ...