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We created the Typelevel Foundation in 2025 to strengthen the long-term sustainability of the Typelevel ecosystem and to further our mission of advancing functional programming while growing an inclusive community of curious and passionate developers.

If your organization relies on Typelevel libraries, please consider sponsoring the Foundation to help ensure ongoing maintenance, development, and community support. We would love to talk to you; please reach out!

@typelevel

Reaching this goal will cover the cost of our GitHub Teams subscription!

Featured sponsors

@DavidGregory084
@b-vennes
@BalmungSan
@andrew-selvia
@lorandszakacs
@a-nigredo
Private Sponsor
@lhns

Current sponsors 8

@a-nigredo
@lorandszakacs
@lhns
@andrew-selvia
@b-vennes
Private Sponsor
@BalmungSan
@DavidGregory084

Meet the team

Featured work

  1. typelevel/cats

    Lightweight, modular, and extensible library for functional programming.

    Scala 5,392
  2. typelevel/cats-effect

    The pure asynchronous runtime for Scala

    Scala 2,189
  3. typelevel/fs2

    Compositional, streaming I/O library for Scala

    Scala 2,432
  4. typelevel/skunk

    A data access library for Scala + Postgres.

    Scala 1,633
  5. typelevel/otel4s

    An OpenTelemetry library for Scala based on Cats-Effect

    Scala 201
  6. typelevel/feral

    Feral cats are homeless, feral functions are serverless

    Scala 196

Learn more about sponsoring developers and organizations.

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10% towards $250 per month goal

@andrew-selvia @lorandszakacs
@b-vennes @BalmungSan @lhns @DavidGregory084 @a-nigredo

andrew-selvia and 7 others sponsor this goal

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Thank you for being a monthly supporter! Enjoy free virtual admission to events organized by the Typelevel Foundation, including Typelevel Summits.