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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 631

  3. scalacheck scalacheck Public

    Property-based testing for Scala

    Scala 2k 398

  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 572

  6. discipline discipline Public

    Flexible law checking for Scala

    Scala 336 59

Repositories

Showing 10 of 111 repositories
  • fabric Public

    Object-Notation Abstraction for JSON, binary, HOCON, etc.

    typelevel/fabric’s past year of commit activity
    Scala 131 MIT 5 0 0 Updated Mar 21, 2026
  • cats Public

    Lightweight, modular, and extensible library for functional programming.

    typelevel/cats’s past year of commit activity
    Scala 5,430 1,242 223 (7 issues need help) 47 Updated Mar 21, 2026
  • munit-cats-effect Public

    Integration library for MUnit & cats-effect

    typelevel/munit-cats-effect’s past year of commit activity
    Scala 156 Apache-2.0 38 4 2 Updated Mar 21, 2026
  • mouse Public

    A small companion to cats

    typelevel/mouse’s past year of commit activity
    Scala 376 MIT 66 4 3 Updated Mar 21, 2026
  • jawn Public

    Jawn is for parsing jay-sawn (JSON)

    typelevel/jawn’s past year of commit activity
    Scala 434 73 12 2 Updated Mar 20, 2026
  • gsoc-onboarding Public
    typelevel/gsoc-onboarding’s past year of commit activity
    Scala 3 45 0 0 Updated Mar 20, 2026
  • skunk Public

    A data access library for Scala + Postgres.

    typelevel/skunk’s past year of commit activity
    Scala 1,640 MIT 166 77 (2 issues need help) 9 Updated Mar 20, 2026
  • otel4s-sdk Public

    Implementation of the otel4s SDK modules in Scala from scratch

    typelevel/otel4s-sdk’s past year of commit activity
    Scala 5 Apache-2.0 2 7 (2 issues need help) 2 Updated Mar 20, 2026
  • paiges Public

    an implementation of Wadler's a prettier printer

    typelevel/paiges’s past year of commit activity
    Scala 189 Apache-2.0 31 4 14 Updated Mar 19, 2026
  • steward Public

    Runs Scala Steward for Typelevel projects

    typelevel/steward’s past year of commit activity
    6 14 1 1 Updated Mar 19, 2026
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Sponsors

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