Join the Technical Steering Committee

Apply to join the Typelevel Technical Steering Committee!

We want to bring together a diverse group of contributors, users, and enthusiasts to help steward the Typelevel ecosystem together.

Read the blog post to learn more:
typelevel.org/blog/join-ts...

Release v3.7.0 · typelevel/cats-effect This is the fifty-ninth release in the Cats Effect 3.x lineage. It is fully binary compatible with every 3.x release and fully source-compatible with the 3.7.x lineage. What's Changed This is a rel...

Cats Effect v3.7.0 is here!

This is a relatively small but mighty release that brings full support for Scala Native 0.5: you can now write multi-threaded apps using polling I/O and compile them to native binaries.

Stay tuned this week as the release train continues 🚂

github.com/typelevel/ca...

Typelevel Foundation is a 501(c)(3) public charity

The Typelevel Foundation was determined to be a 501(c)(3) public charity!

This is a testament to the intellectual merit and educational value of our community's contributions to functional programming. Congratulations!

typelevel.org/blog/charity...

Typelevel Summer of Code 2026

We are excited to announce our participation in Google Summer of Code 2026! Please share this opportunity with students and early-career developers who are interested in functional programming and open source 😺

typelevel.org/blog/gsoc-20...

We just launched a new typelevel.org built with the #typelevel stack! Read the blog post by @armanbil.ge and Andrew Valencik to find out what's next and how you can help 😸

typelevel.org/blog/typelev...

New video! Featuring cats-mtl and its relatively recent additions of the allow/rescue mechanism, AKA scoped capabilities.

https://www.youtube.com/watch?v=cTKWpYMciV8

Release v0.15.0 · typelevel/otel4s We are happy to announce the 0.15.0 release. NoteThe otel4s-sdk* modules have been moved to a new repository and now have their own release cycle. WarningThere are several minor binary- and source...

#otel4s v0.15.0 is released 🎉 It brings several QoL improvements and a few breaking changes, especially around testkit builders.

github.com/typelevel/ot...

Practical observability: distributed tracing with otel4s Practical distributed tracing in Scala using otel4s and OpenTelemetry, with a focus on real runtime behavior and instrumentation.

Part 2 of Maksym's series on #scala #observability with #otel4s!

ochenashko.com/practical-ob...

Practical observability: foundations with OpenTelemetry A practical introduction to observability foundations: telemetry signals, context propagation, OpenTelemetry, and otel4s.

how exciting, Maksym Ochenashko is writing a series on #observability in #scala applications! Maks is a prolific maintainer of #otel4s and #cats-effect.

ochenashko.com/practical-ob...