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Typelevel

We do functional programming together!
README.md

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 397

  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 571

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 336 59

Repositories

Showing 10 of 111 repositories
  • doobie Public

    Functional JDBC layer for Scala.

    typelevel/doobie’s past year of commit activity
    Scala 2,216 MIT 374 126 7 Updated Mar 17, 2026
  • natchez Public

    functional tracing for cats

    typelevel/natchez’s past year of commit activity
    Scala 340 MIT 78 16 12 Updated Mar 17, 2026
  • 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 448 Apache-2.0 54 11 19 Updated Mar 17, 2026
  • gsoc-onboarding Public
    typelevel/gsoc-onboarding’s past year of commit activity
    Scala 3 45 0 0 Updated Mar 17, 2026
  • steward Public

    Runs Scala Steward for Typelevel projects

    typelevel/steward’s past year of commit activity
    6 14 1 0 Updated Mar 17, 2026
  • cats-collections Public

    Data structures for pure functional programming in Scala

    typelevel/cats-collections’s past year of commit activity
    Scala 564 106 14 (1 issue needs help) 8 Updated Mar 17, 2026
  • squants Public

    The Scala API for Quantities, Units of Measure and Dimensional Analysis

    typelevel/squants’s past year of commit activity
    Scala 931 Apache-2.0 124 43 19 Updated Mar 17, 2026
  • typelevel.g8 Public

    A typelevel.g8 based on sbt-typelevel

    typelevel/typelevel.g8’s past year of commit activity
    Scala 15 6 8 0 Updated Mar 17, 2026
  • fs2-grpc Public

    gRPC implementation for FS2/cats-effect

    typelevel/fs2-grpc’s past year of commit activity
    Scala 281 MIT 65 8 5 Updated Mar 17, 2026
  • otel4s Public

    An OpenTelemetry library for Scala based on Cats-Effect

    typelevel/otel4s’s past year of commit activity
    Scala 204 Apache-2.0 47 11 (1 issue needs help) 5 Updated Mar 17, 2026
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Sponsors

  • @armanbilge
  • @vladimir-popov
  • @rtyley
  • @yoshinorin
  • @a-nigredo
  • @DavidGregory084
  • @lhns
  • @BalmungSan
  • @b-vennes
  • @lorandszakacs
  • @andrew-selvia
  • Private Sponsor