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The Scala Library Index

    • akka151
    • akka-http57
    • akka-streams55
    • apache-spark32
    • big-data30
    • cats144
    • cats-effect107
    • circe46
    • database50
    • dsl35
    • fp49
    • fs265
    • functional-programming182
    • hacktoberfest73
    • http45
    • http4s50
    • java149
    • jdbc30
    • json122
    • jvm30
    • kafka55
    • library33
    • logging31
    • machine-learning39
    • macros50
    • metrics37
    • mongodb32
    • play-framework59
    • playframework59
    • production54
    • reactive35
    • reactive-streams33
    • sbt250
    • sbt-plugin241
    • scala2030
    • scala-js62
    • scala-library34
    • scala-native47
    • scala346
    • scalajs154
    • scalaz40
    • shapeless40
    • spark177
    • sql46
    • streaming36
    • swagger32
    • testing56
    • tracing36
    • typelevel43
    • zio102

    Scala Versions

    Scala 3.x

    1562 projects

    Scala 2.13

    3001 projects

    Other versions: 2.12 2.11 2.10

    Platforms

    Scala.js 1.x

    786 projects

    Other versions: 0.6

    Scala Native 0.5

    165 projects

    Other versions: 0.4 0.3

    Build Tool Plugins

    sbt 1.x

    620 projects

    Other versions: 0.13 2.0.0-M4 2.0.0-M3 2.0.0-M2 2.0.0-M1

    Mill 0.12

    2 projects

    Other versions: 0.11 0.10 0.9 0.7 0.6

    Recent projects

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    xuwei-k/scalafix-rule-resource-gen

    generate META-INF/services/scalafix.v1.Rule

    03 Jul 2025 at 13:25 (UTC)
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    touk/flink-scala

    26 Jun 2025 at 11:41 (UTC)
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    iltotore/mill-tailwind

    Tailwind & DaisyUI plugin for Mill, without Node

    15 Jun 2025 at 22:32 (UTC)
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    indoorvivants/sniper

    Snippet manager with templates, Alfred integration, and MCP

    14 Jun 2025 at 22:47 (UTC)
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    xuwei-k/sbt-root-aggregate

    check aggragete all sub projects

    14 Jun 2025 at 08:44 (UTC)
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    dripower/postgresql-async

    12 Jun 2025 at 10:02 (UTC)
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    xuwei-k/scalafix-check

    additional sbt-scalafix tasks

    12 Jun 2025 at 02:26 (UTC)
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    nivox/cats-effect-treesync

    09 Jun 2025 at 22:19 (UTC)
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    balmungsan/neotypes

    Scala lightweight, type-safe, asynchronous driver for neo4j

    08 Jun 2025 at 03:31 (UTC)
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    rossabaker/sbt-typelevel

    sbt plugin for publishing semantically-versioned, binary-compatible artifacts to Maven/Sonatype from GitHub Actions

    30 May 2025 at 20:52 (UTC)
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    nivox/fs2-backpressure-sensor

    Backpressure sensor implementation for fs2

    29 May 2025 at 20:13 (UTC)
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    typelevel/weaver-test

    A test framework that runs everything in parallel.

    28 May 2025 at 00:08 (UTC)
    More ...

    Most depended-upon Projects

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    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)
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    scalatest/scalatest

    A testing tool for Scala and Java developers

    22 Dec 2012 at 03:43 (UTC)
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    scala/scala3

    The Scala 3 compiler, also known as Dotty.

    09 Jun 2016 at 13:04 (UTC)
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    scala-js/scala-js

    Scala.js, the Scala to JavaScript compiler

    14 Jan 2014 at 19:54 (UTC)
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    typelevel/scalacheck

    Property-based testing for Scala

    07 Apr 2013 at 13:37 (UTC)
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    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)
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    typelevel/cats

    Lightweight, modular, and extensible library for functional programming.

    05 Feb 2016 at 06:15 (UTC)
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    etorreborre/specs2

    Software Specifications for Scala

    13 Jun 2012 at 22:50 (UTC)
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    circe/circe

    Yet another JSON library for Scala

    10 Aug 2015 at 02:04 (UTC)
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    typelevel/cats-effect

    The pure asynchronous runtime for Scala

    21 Apr 2017 at 23:00 (UTC)
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    lightbend/config

    configuration library for JVM languages using HOCON files

    13 Apr 2012 at 03:51 (UTC)
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    playframework/playframework

    The Community Maintained High Velocity Web Framework For Java and Scala.

    21 Aug 2014 at 04:52 (UTC)
    More ...
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