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Typelevel

We do functional programming together!
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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 630

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 2k 395

  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 570

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 336 59

Repositories

Showing 10 of 113 repositories
  • cats Public

    Lightweight, modular, and extensible library for functional programming.

    typelevel/cats’s past year of commit activity
    Scala 5,434 1,240 223 (7 issues need help) 47 Updated Apr 7, 2026
  • scalacheck-effect Public

    Effectful property testing built on ScalaCheck

    typelevel/scalacheck-effect’s past year of commit activity
    Scala 82 Apache-2.0 25 6 2 Updated Apr 7, 2026
  • scalacheck Public

    Property-based testing for Scala

    typelevel/scalacheck’s past year of commit activity
    Scala 1,964 BSD-3-Clause 395 54 (1 issue needs help) 10 Updated Apr 7, 2026
  • scalac-options Public

    A library for configuring scalac options

    typelevel/scalac-options’s past year of commit activity
    Scala 48 Apache-2.0 18 6 9 Updated Apr 7, 2026
  • scalac-compat Public

    Lightweight tools for tackling Scalac version incompatibilities

    typelevel/scalac-compat’s past year of commit activity
    Scala 9 Apache-2.0 3 0 0 Updated Apr 7, 2026
  • discipline-munit Public

    MUnit binding for Typelevel Discipline

    typelevel/discipline-munit’s past year of commit activity
    Scala 25 15 1 1 Updated Apr 7, 2026
  • discipline-scalatest Public

    ScalaTest binding for Discipline

    typelevel/discipline-scalatest’s past year of commit activity
    Scala 20 MIT 17 1 2 Updated Apr 7, 2026
  • typelevel.g8 Public

    A typelevel.g8 based on sbt-typelevel

    typelevel/typelevel.g8’s past year of commit activity
    Scala 14 6 8 0 Updated Apr 7, 2026
  • vulcan Public

    Functional Avro for Scala

    typelevel/vulcan’s past year of commit activity
    Scala 104 Apache-2.0 35 0 0 Updated Apr 7, 2026
  • fs2 Public

    Compositional, streaming I/O library for Scala

    typelevel/fs2’s past year of commit activity
    Scala 2,443 630 104 (7 issues need help) 43 Updated Apr 7, 2026
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  • @andrew-selvia
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