Repositories list

• dotty

  Public
  Research platform for new language concepts and compiler technologies for Scala.

  Scala

  •

  Apache License 2.0

  •1.2k1.2k forks in dotty-staging/dotty•8585 stars in dotty-staging/dotty•00 issues in dotty-staging/dotty•1717 pull requests in dotty-staging/dotty•Updated Nov 11, 2026Nov 11, 2026

• zio

  Public
  ZIO — A type-safe, composable library for asynchronous and concurrent programming in Scala

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •

  Apache License 2.0

  •1.6k1.6k forks in dotty-staging/zio•00 stars in dotty-staging/zio•00 issues in dotty-staging/zio•4545 pull requests in dotty-staging/zio•Updated Nov 10, 2026Nov 10, 2026

• PPrint

  Public
  Pretty-printing value, types and type-signatures in Scala

  Scala

  •

  MIT License

  •4343 forks in dotty-staging/PPrint•00 stars in dotty-staging/PPrint•00 issues in dotty-staging/PPrint•22 pull requests in dotty-staging/PPrint•Updated Nov 6, 2026Nov 6, 2026

• utest

  Public
  A simple testing framework for Scala

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •8787 forks in dotty-staging/utest•00 stars in dotty-staging/utest•00 issues in dotty-staging/utest•00 pull requests in dotty-staging/utest•Updated Sep 23, 2026Sep 23, 2026

• shapeless-3

  Public
  Generic programming for Scala

  Scala

  •2323 forks in dotty-staging/shapeless-3•11 star in dotty-staging/shapeless-3•00 issues in dotty-staging/shapeless-3•00 pull requests in dotty-staging/shapeless-3•Updated Sep 23, 2026Sep 23, 2026

• upickle

  Public
  uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •

  MIT License

  •178178 forks in dotty-staging/upickle•00 stars in dotty-staging/upickle•00 issues in dotty-staging/upickle•00 pull requests in dotty-staging/upickle•Updated Sep 23, 2026Sep 23, 2026

• requests

  Public
  A Scala port of the popular Python Requests HTTP client: flexible, intuitive, and straightforward to use.

  Scala

  •

  Other

  •9898 forks in dotty-staging/requests•00 stars in dotty-staging/requests•00 issues in dotty-staging/requests•22 pull requests in dotty-staging/requests•Updated Sep 23, 2026Sep 23, 2026

• os-lib

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

  Scala

  •

  Other

  •8989 forks in dotty-staging/os-lib•00 stars in dotty-staging/os-lib•00 issues in dotty-staging/os-lib•00 pull requests in dotty-staging/os-lib•Updated Sep 23, 2026Sep 23, 2026

• scas

  Public
  Scala Algebra System

  Scala

  •11 fork in dotty-staging/scas•00 stars in dotty-staging/scas•00 issues in dotty-staging/scas•00 pull requests in dotty-staging/scas•Updated Sep 23, 2026Sep 23, 2026

• cask

  Public
  Cask: a Scala HTTP micro-framework

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •

  Other

  •6767 forks in dotty-staging/cask•00 stars in dotty-staging/cask•00 issues in dotty-staging/cask•11 pull request in dotty-staging/cask•Updated Sep 23, 2026Sep 23, 2026

• fansi

  Public
  Scala/Scala.js library for manipulating Fancy Ansi colored strings

  Scala

  •

  Other

  •2727 forks in dotty-staging/fansi•00 stars in dotty-staging/fansi•00 issues in dotty-staging/fansi•22 pull requests in dotty-staging/fansi•Updated Sep 23, 2026Sep 23, 2026

• scalaz

  Public
  Principled Functional Programming in Scala

  Scala

  •

  Other

  •695695 forks in dotty-staging/scalaz•00 stars in dotty-staging/scalaz•00 issues in dotty-staging/scalaz•00 pull requests in dotty-staging/scalaz•Updated Sep 23, 2026Sep 23, 2026

• scala-parser-combinators

  Public
  simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module

  Scala

  •

  Apache License 2.0

  •131131 forks in dotty-staging/scala-parser-combinators•00 stars in dotty-staging/scala-parser-combinators•00 issues in dotty-staging/scala-parser-combinators•00 pull requests in dotty-staging/scala-parser-combinators•Updated Sep 23, 2026Sep 23, 2026

• scala-parallel-collections

  Public
  Parallel collections standard library module for Scala 2.13+

  Scala

  •

  Apache License 2.0

  •3131 forks in dotty-staging/scala-parallel-collections•00 stars in dotty-staging/scala-parallel-collections•00 issues in dotty-staging/scala-parallel-collections•00 pull requests in dotty-staging/scala-parallel-collections•Updated Sep 23, 2026Sep 23, 2026

• scala-java8-compat

  Public
  A Java 8 compatibility kit for Scala.

  Scala

  •

  Apache License 2.0

  •6262 forks in dotty-staging/scala-java8-compat•00 stars in dotty-staging/scala-java8-compat•00 issues in dotty-staging/scala-java8-compat•00 pull requests in dotty-staging/scala-java8-compat•Updated Sep 23, 2026Sep 23, 2026

• izumi-reflect

  Public
  TypeTag without scala-reflect

  Scala

  •

  Other

  •7070 forks in dotty-staging/izumi-reflect•11 star in dotty-staging/izumi-reflect•00 issues in dotty-staging/izumi-reflect•00 pull requests in dotty-staging/izumi-reflect•Updated Sep 23, 2026Sep 23, 2026

• intent

  Public
  Test framework for Dotty

  Scala

  •

  Apache License 2.0

  •44 forks in dotty-staging/intent•00 stars in dotty-staging/intent•00 issues in dotty-staging/intent•00 pull requests in dotty-staging/intent•Updated Sep 23, 2026Sep 23, 2026

• fastparse

  Public
  Writing Fast Parsers Fast in Scala

  Scala

  •164164 forks in dotty-staging/fastparse•11 star in dotty-staging/fastparse•00 issues in dotty-staging/fastparse•00 pull requests in dotty-staging/fastparse•Updated Sep 23, 2026Sep 23, 2026

• cats

  Public
  Lightweight, modular, and extensible library for functional programming.

  Scala

  •

  Other

  •1.2k1.2k forks in dotty-staging/cats•11 star in dotty-staging/cats•00 issues in dotty-staging/cats•00 pull requests in dotty-staging/cats•Updated Sep 23, 2026Sep 23, 2026

• munit

  Public
  Scala testing library with actionable errors and extensible APIs

  Scala

  •

  Apache License 2.0

  •108108 forks in dotty-staging/munit•00 stars in dotty-staging/munit•00 issues in dotty-staging/munit•22 pull requests in dotty-staging/munit•Updated Sep 23, 2026Sep 23, 2026

• ScalaPB

  Public
  Protocol buffer compiler for Scala.

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •

  Apache License 2.0

  •293293 forks in dotty-staging/ScalaPB•00 stars in dotty-staging/ScalaPB•00 issues in dotty-staging/ScalaPB•00 pull requests in dotty-staging/ScalaPB•Updated Jul 28, 2026Jul 28, 2026

• libretto

  Public
  Declarative concurrency and stream processing library for Scala

  Scala

  •

  Mozilla Public License 2.0

  •77 forks in dotty-staging/libretto•00 stars in dotty-staging/libretto•00 issues in dotty-staging/libretto•00 pull requests in dotty-staging/libretto•Updated Jul 28, 2026Jul 28, 2026

• sconfig

  Public
  Scala cross platform configuration library supporting HOCON

  Scala

  •

  Other

  •1010 forks in dotty-staging/sconfig•00 stars in dotty-staging/sconfig•00 issues in dotty-staging/sconfig•00 pull requests in dotty-staging/sconfig•Updated Jul 28, 2026Jul 28, 2026

• scala-xml

  Public
  The standard Scala XML library

  community-project

  community-project

  Scala

  •

  Apache License 2.0

  •9090 forks in dotty-staging/scala-xml•00 stars in dotty-staging/scala-xml•00 issues in dotty-staging/scala-xml•00 pull requests in dotty-staging/scala-xml•Updated Jul 28, 2026Jul 28, 2026

• cats-effect

  Public
  The purely functional runtime system for Scala

  Scala

  •

  Apache License 2.0

  •585585 forks in dotty-staging/cats-effect•00 stars in dotty-staging/cats-effect•00 issues in dotty-staging/cats-effect•11 pull request in dotty-staging/cats-effect•Updated Jul 28, 2026Jul 28, 2026

• perspective

  Public
  Higher kinded data in Scala

  Scala

  •22 forks in dotty-staging/perspective•00 stars in dotty-staging/perspective•00 issues in dotty-staging/perspective•00 pull requests in dotty-staging/perspective•Updated Jul 28, 2026Jul 28, 2026

• Lucre

  Public
  Lucre (STM|Event|Data|Confluent) - a transactional, persistent, reactive object model. Mirror of https://git.iem.at/sciss/Lucre

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •

  GNU Affero General Public License v3.0

  •00 forks in dotty-staging/Lucre•00 stars in dotty-staging/Lucre•00 issues in dotty-staging/Lucre•00 pull requests in dotty-staging/Lucre•Updated Jul 28, 2026Jul 28, 2026

• scala-stm

  Public
  A library-based Software Transactional Memory (STM) for Scala, coupled with transactional sets and maps

  Scala

  •

  BSD 3-Clause "New" or "Revised" License

  •3939 forks in dotty-staging/scala-stm•00 stars in dotty-staging/scala-stm•00 issues in dotty-staging/scala-stm•00 pull requests in dotty-staging/scala-stm•Updated Jul 28, 2026Jul 28, 2026

• parboiled2

  Public
  A macro-based PEG parser generator for Scala 2.10+

  Scala

  •

  Other

  •8585 forks in dotty-staging/parboiled2•00 stars in dotty-staging/parboiled2•00 issues in dotty-staging/parboiled2•00 pull requests in dotty-staging/parboiled2•Updated Jul 16, 2026Jul 16, 2026

• spire

  Public
  Powerful new number types and numeric abstractions for Scala.

  community-buildstatus-enabled

  community-buildstatus-enabled

  Scala

  •

  MIT License

  •239239 forks in dotty-staging/spire•00 stars in dotty-staging/spire•00 issues in dotty-staging/spire•00 pull requests in dotty-staging/spire•Updated Jul 14, 2026Jul 14, 2026