The Scala Library Index

Scala Versions

Scala 3.x

2238 projects

Scala 2.13

3529 projects

Other versions: 2.12 2.11 2.10

Platforms

Scala.js 1.x

1002 projects

Other versions: 0.6

Scala Native 0.5

290 projects

Other versions: 0.4 0.3

Build Tool Plugins

sbt 2.x

71 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

ghostdogpr/purelogic

Direct-style pure domain logic for Scala

15 Mar 2026 at 03:07 (UTC)

jatcwang/doobie-package-rename-scalafix

Scalafix rule to rename references of _root_.doobie to org.typelevel.doobie

14 Mar 2026 at 23:12 (UTC)

bishabosha/scala-object-notation

SCON files use Scala's syntax to format data

13 Mar 2026 at 17:49 (UTC)

alexdupre/thumbhash4s

A scala3 library to create and parse ThumbHash image placeholders.

12 Mar 2026 at 18:18 (UTC)

pjfanning/pekko-diagnostics

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

10 Mar 2026 at 17:36 (UTC)

lbialy/qdrant4s

Http client for Qdrant (https://qdrant.tech) vector database

10 Mar 2026 at 12:02 (UTC)

nationalarchives/tdr-common-utils

Common libraries and code used across TDR

10 Mar 2026 at 10:53 (UTC)

hoangmaihuy/scalapb-jsoniter

Json/Protobuf convertors for ScalaPB use jsoniter-scala

10 Mar 2026 at 04:52 (UTC)

indoorvivants/sbt-doc-view

Browse documentation for your library dependencies from SBT build

09 Mar 2026 at 14:05 (UTC)

hshn/zlick

08 Mar 2026 at 14:26 (UTC)

polyvariant/eds4s

Evolution Data Server integration for Scala

05 Mar 2026 at 17:16 (UTC)

scalawag/sarong

Scala string template with smart multiline blocks

04 Mar 2026 at 15:45 (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)

lightbend/config

configuration library for JVM languages using HOCON files

13 Apr 2012 at 03:51 (UTC)

scalameta/munit

Scala testing library with actionable errors and extensible APIs

11 Jan 2020 at 22:03 (UTC)

More ...