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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 5.3k 1.2k

  2. fs2 fs2 Public

    Compositional, streaming I/O library for Scala

    Scala 2.4k 618

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 1.9k 406

  4. spire spire Public

    Powerful new number types and numeric abstractions for Scala.

    Scala 1.8k 244

  5. cats-effect cats-effect Public

    The pure asynchronous runtime for Scala

    Scala 2.2k 558

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 334 57

Repositories

Showing 10 of 107 repositories
  • otel4s Public

    An OpenTelemetry library for Scala based on Cats-Effect

    typelevel/otel4s’s past year of commit activity
    Scala 194 Apache-2.0 43 23 (3 issues need help) 8 Updated Aug 9, 2025
  • grackle Public

    Grackle: Functional GraphQL for the Typelevel stack

    typelevel/grackle’s past year of commit activity
    Scala 181 Apache-2.0 29 22 (1 issue needs help) 2 Updated Aug 9, 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 37 4 2 Updated Aug 9, 2025
  • cats-collections Public

    Data structures for pure functional programming in Scala

    typelevel/cats-collections’s past year of commit activity
    Scala 559 99 14 (1 issue needs help) 1 Updated Aug 9, 2025
  • sbt-tpolecat Public

    scalac options for the enlightened

    typelevel/sbt-tpolecat’s past year of commit activity
    Scala 404 Apache-2.0 54 11 (2 issues need help) 3 Updated Aug 9, 2025
  • natchez Public

    functional tracing for cats

    typelevel/natchez’s past year of commit activity
    Scala 334 MIT 79 15 9 Updated Aug 8, 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 3 Updated Aug 8, 2025
  • jdk-index Public

    A Jabba compatible index of JDK versions

    typelevel/jdk-index’s past year of commit activity
    Scala 18 Apache-2.0 5 2 4 Updated Aug 8, 2025
  • 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 Aug 8, 2025
  • scalac-options Public

    A library for configuring scalac options

    typelevel/scalac-options’s past year of commit activity
    Scala 44 Apache-2.0 13 7 4 Updated Aug 8, 2025
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