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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 622

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 2k 402

  4. spire spire Public

    Powerful new number types and numeric abstractions for Scala.

    Scala 1.8k 240

  5. cats-effect cats-effect Public

    The pure asynchronous runtime for Scala

    Scala 2.2k 564

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 335 58

Repositories

Showing 10 of 109 repositories
  • fs2 Public

    Compositional, streaming I/O library for Scala

    typelevel/fs2’s past year of commit activity
    Scala 2,432 622 95 (7 issues need help) 26 Updated Nov 30, 2025
  • spire Public

    Powerful new number types and numeric abstractions for Scala.

    typelevel/spire’s past year of commit activity
    Scala 1,777 MIT 240 133 (2 issues need help) 30 Updated Nov 30, 2025
  • munit-cats-effect Public

    Integration library for MUnit & cats-effect

    typelevel/munit-cats-effect’s past year of commit activity
    Scala 153 Apache-2.0 38 5 3 Updated Nov 30, 2025
  • vault Public

    Type-safe, persistent storage for values of arbitrary types

    typelevel/vault’s past year of commit activity
    Scala 83 MIT 20 1 0 Updated Nov 30, 2025
  • mouse Public

    A small companion to cats

    typelevel/mouse’s past year of commit activity
    Scala 376 MIT 66 4 3 Updated Nov 30, 2025
  • log4cats Public

    Logging Tools For Interaction with cats-effect

    typelevel/log4cats’s past year of commit activity
    Scala 414 Apache-2.0 80 13 12 Updated Nov 30, 2025
  • keypool Public

    A Keyed Pool Implementation for Scala

    typelevel/keypool’s past year of commit activity
    Scala 39 MIT 15 8 6 Updated Nov 30, 2025
  • simulacrum-scalafix Public

    Simulacrum as Scalafix rules

    typelevel/simulacrum-scalafix’s past year of commit activity
    Scala 34 10 6 6 Updated Nov 30, 2025
  • literally Public

    Compile time validation of literal values built from strings

    typelevel/literally’s past year of commit activity
    Scala 112 Apache-2.0 6 1 2 Updated Nov 30, 2025
  • cats-effect-testing Public

    Integration between cats-effect and test frameworks

    typelevel/cats-effect-testing’s past year of commit activity
    Scala 191 Apache-2.0 43 8 15 Updated Nov 30, 2025
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Sponsors

  • @b-vennes
  • @lorandszakacs
  • @andrew-selvia
  • Private Sponsor

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