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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 619

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 1.9k 405

  4. spire spire Public

    Powerful new number types and numeric abstractions for Scala.

    Scala 1.8k 245

  5. cats-effect cats-effect Public

    The pure asynchronous runtime for Scala

    Scala 2.1k 557

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 332 56

Repositories

Showing 10 of 106 repositories
  • bobcats Public

    Typelevel's very own CryptoKitties!

    typelevel/bobcats’s past year of commit activity
    Scala 28 Apache-2.0 9 10 6 Updated Jul 15, 2025
  • typelevel-nix Public

    Development tools for Typelevel projects

    typelevel/typelevel-nix’s past year of commit activity
    Nix 119 Apache-2.0 10 3 4 Updated Jul 15, 2025
  • otel4s Public

    An OpenTelemetry library for Scala based on Cats-Effect

    typelevel/otel4s’s past year of commit activity
    Scala 190 Apache-2.0 43 22 (3 issues need help) 7 Updated Jul 14, 2025
  • natchez Public

    functional tracing for cats

    typelevel/natchez’s past year of commit activity
    Scala 332 MIT 79 15 8 Updated Jul 14, 2025
  • Laika Public

    Site and E-book Generator and Customizable Text Markup Transformer for sbt, Scala and Scala.js

    typelevel/Laika’s past year of commit activity
    Scala 437 Apache-2.0 51 7 7 Updated Jul 14, 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) 3 Updated Jul 14, 2025
  • doobie Public

    Functional JDBC layer for Scala.

    typelevel/doobie’s past year of commit activity
    Scala 2,196 MIT 370 125 6 Updated Jul 13, 2025
  • cats-time Public

    Cats Instances for Java Time

    typelevel/cats-time’s past year of commit activity
    Scala 91 MIT 19 1 0 Updated Jul 13, 2025
  • munit-cats-effect Public

    Integration library for MUnit & cats-effect

    typelevel/munit-cats-effect’s past year of commit activity
    Scala 152 Apache-2.0 39 4 3 Updated Jul 12, 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 Jul 12, 2025
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