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@typelevel

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 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
  • jawn Public

    Jawn is for parsing jay-sawn (JSON)

    typelevel/jawn’s past year of commit activity
    Scala 434 73 12 2 Updated Mar 24, 2026
  • natchez Public

    functional tracing for cats

    typelevel/natchez’s past year of commit activity
    Scala 340 MIT 78 16 11 Updated Mar 24, 2026
  • natchez-http4s Public

    Glorious integration layer for Natchez and Http4s.

    typelevel/natchez-http4s’s past year of commit activity
    Scala 50 MIT 19 4 4 Updated Mar 24, 2026
  • kittens Public

    Automatic type class derivation for Cats

    typelevel/kittens’s past year of commit activity
    Scala 546 Apache-2.0 66 7 2 Updated Mar 24, 2026
  • weaver-test Public

    A test framework that runs everything in parallel.

    typelevel/weaver-test’s past year of commit activity
    Scala 82 13 25 4 Updated Mar 24, 2026
  • vault Public

    Type-safe, persistent storage for values of arbitrary types

    typelevel/vault’s past year of commit activity
    Scala 84 MIT 20 1 1 Updated Mar 24, 2026
  • typelevel.g8 Public

    A typelevel.g8 based on sbt-typelevel

    typelevel/typelevel.g8’s past year of commit activity
    Scala 15 6 8 1 Updated Mar 24, 2026
  • typelevel-scalafix Public

    Scalafix rules for Typelevel projects

    typelevel/typelevel-scalafix’s past year of commit activity
    Scala 26 Apache-2.0 8 18 (1 issue needs help) 13 Updated Mar 24, 2026
  • twiddles Public

    Micro-library for building effectful protocols

    typelevel/twiddles’s past year of commit activity
    Scala 69 BSD-3-Clause 4 1 5 Updated Mar 24, 2026
  • toolkit Public

    Quickstart your next app with the Typelevel Toolkit!

    typelevel/toolkit’s past year of commit activity
    Scala 98 Apache-2.0 9 8 (1 issue needs help) 13 Updated Mar 24, 2026
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Sponsors

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