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Typelevel @typelevel.org · 26/09/2026

Don't miss this innovative interactive lab by Technical Steering Committee members Maks and Antonio. You will develop your problem-solving skills as you learn to interpret telemetry signals, diagnose incidents, and ship mitigations in a realistic demo application built on the Typelevel stack.

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Typelevel @typelevel.org · 15/09/2026

What if you could improve the performance of a fundamental functional data structure—the singly linked list—with one simple modification? Find out in L's talk about his Google Summer of Code project, mentored by Sergey Torgashov and based on an idea from @posco.dev.

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Typelevel @typelevel.org · 15/09/2026

We are adding one more stop to the Typelevel Traverse series! Join us in Copenhagen for a workshop and talks by @armanbil.ge and Kathryn Frid. Thank you to Foundation sponsor Famly for hosting! luma.com/ncpbarok

luma.com

Typelevel Traverses Copenhagen · Luma

Join the Typelevel community for an in-person meetup in Copenhagen, hosted and sponsored by Famly! This meetup is open to (aspiring) Typelevel users and…

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Reposted by Typelevel

Scala Days @scaladays.org · 14/09/2026

Caching boosts performance, but implementing it safely is challenging. At #ScalaDays, Katrina Petrevice will show how Cats Ref enables thread-safe, testable caches while preserving functional purity. Details: scaladays.org/sessio... 12–13 October · Berlin

Red promotional graphics with a white “left Bracket” icon. Text reads: Caching in Scala using Cats Ref

Red promotional graphics for ScalaDays, featuring a large white “left bracket”. Text reads: 2026 Scala Days Berlin, with the ScalaDays icon in the top right.

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Reposted by Typelevel

Arman Bilge @armanbil.ge · 14/09/2026

I created Calico to scratch an itch: what if I could use Cats Effect and FS2 to build delightful, reactive webapps? Join my interactive lab and let's find out together! I am excited to teach you about fibers and monads and we will watch them come to life in our browsers. www.armanbilge.com/calico/

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Typelevel @typelevel.org · 04/09/2026

Check out our new contributing guidelines for Typelevel projects, with special guidance for new contributors! They cover where to start on an issue, copyright, how to structure pull requests, and permitted use of AI tools. typelevel.org/blog/contrib...

typelevel.org

AI Tools, Contributing Guide and Code of Conduct Updates

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Typelevel @typelevel.org · 02/09/2026

Very exciting talk about a highly ambitious Google Summer of Code project by Mariusz Jakoniuk to bring the Typelevel stack onto Wasm/WASI! Supporting an entirely new platform is challenging, and even more so when the toolchain and target are still experimental 😅

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Reposted by Typelevel

Arman Bilge @armanbil.ge · 19/08/2026

Last year, I debuted at #ScalaDays with "A Typelevel Retrospective", reflecting on my open source journey with @typelevel.org. This year, I'm back with "A Typelevel Prospectus", sharing exciting updates in our tech and governance. Join me to learn who we are, how we work, and why to get involved!

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Typelevel @typelevel.org · 17/08/2026

Learn about open source security from Typelevel TSC and Security Team member Antonio Jimenez! His talk will share what we learned from the @securitylab.github.com in the @github.com Secure Open Source Fund. P.S. Going to Scala Days in Berlin? Join our co-located Typelevel meetup! lu.ma//iyv37emv

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Typelevel @typelevel.org · 13/08/2026

Typelevel has graduated from the @github.com Secure Open Source Fund! Following an intensive three-week program run by the @securitylab.github.com, we are applying what we learned to harden Typelevel's security posture. More on the blog: typelevel.org/blog/github-...

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Typelevel @typelevel.org · 28/07/2026

Giovanni Ruggiero's talk at #ScalaDays will feature the Typelevel stack—particularly the application of #otel4s for feeding runtime telemetry back into the code-generating pipeline as #ScalaCheck property tests!

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Typelevel @typelevel.org · 24/06/2026

Welcome to the new members of the Typelevel Technical Steering Committee! They will work together to promote, advance, and steward our ecosystem. typelevel.org/blog/tsc-202...

typelevel.org

New members of the Technical Steering Committee

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Typelevel @typelevel.org · 19/06/2026

Meet the Typelevel community in Berlin, London, and Málaga this October! Join one of our events to make friends, learn functional programming, and work on open source together 🥰 typelevel.org/blog/travers...

typelevel.org

Typelevel Traverses Europe

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Reposted by Typelevel

Arman Bilge @armanbil.ge · 15/04/2026

I am excited to speak at the Scala Enthusiasts Meetup on April 29 in my hometown of Boston! In my talk, we will dive into the design and engineering that enable the unique "superpowers" of Cats Effect and learn how to leverage them to build scalable applications. www.scalateams.com/events/bosto...

scalateams.com

April 2026 Boston Area Scala Enthusiasts Meetup — Scala Teams

Join the Boston Area Scala Enthusiasts for in-person meetups with guest speaker Arman Bilge, networking, and discussions for Scala developers of all levels. Reserve your spot today!

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Typelevel @typelevel.org · 02/04/2026

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...

typelevel.org

Join the Technical Steering Committee

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Typelevel @typelevel.org · 09/03/2026

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...

github.com

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...

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Typelevel @typelevel.org · 05/03/2026

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.org

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

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Typelevel @typelevel.org · 03/03/2026

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...

typelevel.org

Typelevel Summer of Code 2026

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Typelevel @typelevel.org · 19/02/2026

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...

typelevel.org

typelevel.org built with Typelevel

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Reposted by Typelevel

Jakub Kozłowski @kubukoz.mstdn.party.ap.brid.gy · 24/01/2026

New video! Featuring cats-mtl and its relatively recent additions of the allow/rescue mechanism, AKA scoped capabilities. www.youtube.com/watch?v=cTKWpYMciV8

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