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@typelevel

typelevel.scala

Let the Scala compiler work for you.
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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 620

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 2k 403

  4. spire spire Public

    Powerful new number types and numeric abstractions for Scala.

    Scala 1.8k 241

  5. cats-effect cats-effect Public

    The pure asynchronous runtime for Scala

    Scala 2.2k 559

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 335 58

Repositories

Showing 10 of 108 repositories
  • cats-mtl Public

    cats transformer type classes.

    typelevel/cats-mtl’s past year of commit activity
    Scala 310 64 17 (2 issues need help) 4 Updated Oct 10, 2025
  • log4cats-natchez Public

    log4cats backend that provides a Logger[F] given a Trace[F] from Natchez

    typelevel/log4cats-natchez’s past year of commit activity
    Scala 1 Apache-2.0 2 0 2 Updated Oct 10, 2025
  • catbird Public

    Birds and cats together

    typelevel/catbird’s past year of commit activity
    Scala 139 Apache-2.0 24 5 (1 issue needs help) 12 Updated Oct 10, 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 Oct 9, 2025
  • monoids Public

    Generic Monoids for Scala

    typelevel/monoids’s past year of commit activity
    Scala 52 MIT 12 1 2 Updated Oct 9, 2025
  • cats-time Public

    Cats Instances for Java Time

    typelevel/cats-time’s past year of commit activity
    Scala 91 MIT 19 1 2 Updated Oct 10, 2025
  • cats-effect-testing Public

    Integration between cats-effect and test frameworks

    typelevel/cats-effect-testing’s past year of commit activity
    Scala 192 Apache-2.0 43 8 12 Updated Oct 10, 2025
  • natchez Public

    functional tracing for cats

    typelevel/natchez’s past year of commit activity
    Scala 336 MIT 78 16 11 Updated Oct 10, 2025
  • scalac-options Public

    A library for configuring scalac options

    typelevel/scalac-options’s past year of commit activity
    Scala 44 Apache-2.0 14 6 8 Updated Oct 10, 2025
  • natchez-http4s Public

    Glorious integration layer for Natchez and Http4s.

    typelevel/natchez-http4s’s past year of commit activity
    Scala 50 MIT 18 3 4 Updated Oct 10, 2025
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