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Typelevel

We do functional programming together!
README.md

Typelevel is an ecosystem of projects and a community of people united to foster an inclusive, welcoming, and safe environment around functional programming in Scala. Also find us on...

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  1. cats cats Public

    Lightweight, modular, and extensible library for functional programming.

    Scala 5.4k 1.2k

  2. fs2 fs2 Public

    Compositional, streaming I/O library for Scala

    Scala 2.4k 629

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 2k 397

  4. spire spire Public

    Powerful new number types and numeric abstractions for Scala.

    Scala 1.8k 239

  5. cats-effect cats-effect Public

    The pure asynchronous runtime for Scala

    Scala 2.2k 571

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 336 58

Repositories

Showing 10 of 111 repositories
  • doobie Public

    Functional JDBC layer for Scala.

    typelevel/doobie’s past year of commit activity
    Scala 2,216 MIT 375 126 5 Updated Mar 13, 2026
  • otel4s-sdk Public

    Implementation of the otel4s SDK modules in Scala from scratch

    typelevel/otel4s-sdk’s past year of commit activity
    Scala 5 Apache-2.0 2 7 (2 issues need help) 1 Updated Mar 13, 2026
  • sbt-typelevel Public

    Let sbt work for you.

    typelevel/sbt-typelevel’s past year of commit activity
    Scala 185 Apache-2.0 55 63 (15 issues need help) 18 Updated Mar 13, 2026
  • jawn-fs2 Public

    Integration between jawn and fs2

    typelevel/jawn-fs2’s past year of commit activity
    Scala 39 18 1 0 Updated Mar 13, 2026
  • fs2-grpc Public

    gRPC implementation for FS2/cats-effect

    typelevel/fs2-grpc’s past year of commit activity
    Scala 281 MIT 65 8 5 Updated Mar 13, 2026
  • cats-tagless Public

    Library of utilities for tagless final encoded algebras

    typelevel/cats-tagless’s past year of commit activity
    Scala 321 Apache-2.0 42 9 (4 issues need help) 3 Updated Mar 12, 2026
  • weaver-test Public

    A test framework that runs everything in parallel.

    typelevel/weaver-test’s past year of commit activity
    Scala 82 13 26 12 Updated Mar 12, 2026
  • typelevel-scalafix Public

    Scalafix rules for Typelevel projects

    typelevel/typelevel-scalafix’s past year of commit activity
    Scala 26 Apache-2.0 8 18 (1 issue needs help) 13 Updated Mar 12, 2026
  • feral Public

    Feral cats are homeless, feral functions are serverless

    typelevel/feral’s past year of commit activity
    Scala 197 Apache-2.0 52 31 (4 issues need help) 33 Updated Mar 12, 2026
  • catscript Public
    typelevel/catscript’s past year of commit activity
    Scala 2 Apache-2.0 1 2 15 Updated Mar 12, 2026
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Sponsors

  • @armanbilge
  • @vladimir-popov
  • @rtyley
  • @yoshinorin
  • @a-nigredo
  • @DavidGregory084
  • @lhns
  • @BalmungSan
  • @b-vennes
  • @lorandszakacs
  • @andrew-selvia
  • Private Sponsor