Come join us for the second edition of the Effect Berlin Meetup, on Thursday, Jan 29 at 6pm. Effect is the missing standard library for Typescript, and makes writing functional and production-grade code easier. Come learn more or share your experience! luma.com/xdpn0t7a @effect-ts.bsky.social

ChEffect - Part 12 A Local-First Meal Planning App written with Effect By Maxwell Brown & Tim Smart www.youtube.com/watch?v=F8qp...

It is time → www.effect.institute/chapters By Kit Langton

www.effect.institute is the coolest course I ever took. Big props to the @effect-ts.bsky.social team for that level of creativity!

Office Hours 10: Library Design, Error Modeling and Propagation, Schema Usage, Service Design By Kit Langton & Maxwell Brown www.youtube.com/watch?v=kJpo...

Happy New Year! 🎉 As we step into 2026, here’s a look back at what shaped Effect in 2025: We gathered in person at Effect Days in 🇮🇹 Italy & the community hosted meetups across: 🇫🇷 Paris & Nice 🇩🇪 Hamburg, Munich & Berlin 🇺🇸 NYC & SF 🇮🇹 Milan, Sardinia & Sondrio 🇦🇹 Vienna 1/

"It really clicked for him when he was writing tests, actually, because he mocked some layer or wrote a test layer for some service... ...I think we've all had sort of that moment, you know, that is just like, oh, this is what this is capable of. This needs to be sort of everywhere on a codebase."

This Week in Effect: → Cause & Effect 7 with Adam Rankin, CTO at Warp → First lesson on www.effect.institute → justfuckinguseeffect.dev More updates below: effect.website/blog/this-we...

Cause & Effect #7 with Adam Rankin, CTO at Warp. We talk about using Effect to bring structure and composability to a growing TypeScript codebase, enabling a small, fast-moving team to stay productive while shipping reliable payroll systems. www.youtube.com/watch?v=zxCR...

This Week in Effect: → Effect Institute by Kit Langton → The Case for Effect article by @ryanjhunter → The Drizzle ORM team building a native Effect driver More updates ⤵️ effect.website/blog/this-we...

ChEffect - Part 11 A Local-First App built with Effect & LiveStore By Maxwell Brown & Tim Smart www.youtube.com/watch?v=Q3uH...

Talks at the upcoming Effect Vienna Meetup 🇦🇹 : → Error Handling & Effectful Programming in TypeScript with Effect by Mattia Manzati → Effect on the Frontend by Sebastian Lorenz Join us on December 18th at 18.30 ⤵️ luma.com/rc84shks

Take the effect pill → www.effect.institute

This Week in Effect: → Advent of Effect: adventofeffect.com → SvelteKit and Effect with Dillon Mulroy → New Effect job Interfere (YC S25) effect.website/blog/this-we...

ChEffect - Part 10 A Local-First App built with Effect & LiveStore By Maxwell Brown & Tim Smart www.youtube.com/watch?v=2OTd...

ChEffect - Part 9 A Local-First App built with Effect & LiveStore By Maxwell Brown & Tim Smart www.youtube.com/watch?v=v6m4...

Our next in-person meetup is going to be in Vienna 🇦🇹 ︀︀→ Thursday, December 18 | 18:30 ︀︀→ LEAN-CODERS ︀︀Sign up below: ︀︀https://luma.com/rc84shks

This Week in Effect: → Effect Solutions and `doctor-effect` by Kit Langton → ChEffect Part 8 by Maxwell Brown and Tim Smart → Effect Meetups in Berlin, Sondrio, and Hamburg! More updates below: effect.website/blog/this-we...

ChEffect - Part 8: A Local-First App built with Effect & LiveStore By Maxwell Brown & Tim Smart www.youtube.com/watch?v=glf1...

Effect meetups coming up: 🇮🇹 Sondrio | Tuesday, Nov 25 · 19:00 🇩🇪 Berlin | Wednesday, Nov 26 · 18:00 🇩🇪 Hamburg | Friday, Nov 28 · 18:30 🇦🇹 Vienna | Thursday, Dec 18 · 18:30 Sign up below: luma.com/effect-commu...

This Week in Effect: → Maybe I Was Wrong About Effect by Ben Davis → Effect NYC Meetup #1 hosted by Warp → 12k stars on GitHub 🌟 More updates below: effect.website/blog/this-we...

Effect events coming up: → Office Hours 9 | Nov 19, 10:00 AM ET / 16:00 CET → NYC Meetup | Nov 19, 7 PM ET → Berlin Meetup | Nov 26, 18:00 CET → Hamburg Meetup | Nov 28, 18:30 CET → Vienna Meetup | Dec 18, 18:30 CET Sign up for any of the events below: luma.com/effect-commu...

This Week in Effect: → Louis Vichy, co-founder of OpenRouter, Inc, on the latest episode of the Cause & Effect podcast 🎙️ → Building AI applications with Effect & Netlify w/ Maxwell Brown & Sean C Davis → Effect Office Hours 8 🔥 More updates below: effect.website/blog/this-we...

Inside OpenRouter's tech stack and use of Effect, with Louis Vichy Watch the full Cause & Effect podcast – episode 6 below: www.youtube.com/watch?v=AVJI...

Cause & Effect Podcast #6 OpenRouter co-founder Louis Vichy joined Johannes Schickling & Michael Arnaldi to talk about OpenRouter's tech stack and how they use Effect. www.youtube.com/watch?v=AVJI...

Office Hours 7: Scheduling, Context, Layers, Dependency Management, Tooling, Workflows... By Kit Langon & Maxwell Brown youtu.be/rXqkuu4D7fQ

This Week in Effect: → Effect 3.19 Release → Over 5 million npm weekly downloads → Effect Vienna Meetup set for Dec 18 More updates below: effect.website/blog/this-we...

Back in Vienna! 🇦🇹 Come meet the community on Dec 18 at the LEAN-CODERS office. → Reserve your spot: luma.com/rc84shks

🔥 Effect Office Hours 7 with Sam Rose, Kit Langton & Maxwell Brown Today at: - 10:00 AM EST - 4:00 PM CET Sign up to join the live chat, or join Discord to ask questions: discord.gg/effect-ts luma.com/d3g51090

Effect 3.19 has been released! 🚀 → effect/cluster improvements → HashRing module → Effect.fn.Return More in the blog post by Tim Smart: effect.website/blog/release...

ChEffect - Part 7: A Local-First App built with Effect & LiveStore By Maxwell Brown & Tim Smart youtu.be/qC-S6M8q-HQ

This Week in Effect: → Everything you should know about Effect with Swyx & Dillon Mulroy → Effect's LSP v0.49 by Mattia Manzati → Effect Office Hours 6 with Maxwell Brown & Kit Langton More updates below: effect.website/blog/this-we...

Effect adoption, AI, and what’s next Panel discussion from our Effect meetup in Milan www.youtube.com/watch?v=9HXf...

🔥 Effect Office Hours 6 with Kit Langton & Maxwell Brown Today at: - 3:00 PM GMT-4 - 9:00 PM GMT+1 Sign up to join the live chat, or join Discord to ask questions: Discord Community: discord.gg/effect-ts Office Hours event link: luma.com/39rsdlc5

Effect + Next.js: Managed Runtimes, Middleware, DX Improvements By Mattia Crovero | Effect Milan 2025 www.youtube.com/watch?v=GX5e...

Effect is heading to NYC! 🗽 ︀︀ ︀︀Join us on Nov 19 at @joinwarp's office for an evening of talks, discussions & networking. ︀︀ ︀︀RSVP below: luma.com/ihoo6kxy

🔥 Office Hours 5: Layers, Dependency Injection, Accessors, and Scopes in Effect By Kit Langton & Maxwell Brown www.youtube.com/watch?v=P_Dd...

This Week in Effect: → Learning Effect with teej_dv & Kit Langton → Error Handling & Effectful Programming in TypeScript by Mattia Manzati → Effect Office Hours 5 🔥 with Maxwell Brown & Kit Langton More updates below: effect.website/blog/this-we...

Error Handling & Effectful Programming in TypeScript with Effect By Mattia Manzati | Effect Milan 2025 www.youtube.com/watch?v=V_Xf...

Effect Office Hours #5 with Kit Langton 🔥 Today at: - 3:00 PM - 4:00 PM GMT-4 - 9:00 PM - 10:00 PM GMT+2 Sign up to join live, ask questions, and connect with the community: luma.com/d0mys7zs

🔥 Effect Office Hours 4: Effect Atom, Effect API, Tracing & Telemetry, File System Abstractions... By Kit Langton & Maxwell Brown youtu.be/ev5hNgGZz6o

I wrote my first non-trivial service with @effect-ts.bsky.social this week! I wanted to fire off a tracking call in a web worker, and using Effect I was able to always capture errors, perform retries, and spin out fibers for each tracking call. It's fast and never throws an error.

This Week in Effect: → Visual Effect by @kitlangton is now open-source! 🚀 → Effect Milan Meetup 🇮🇹 → Effect Office Hours #4 🔥 More in the blog post below ⤵️ effect.website/blog/this-we...

We had a blast at yesterday's Effect Meetup in Milan 🇮🇹 Huge thanks to Davide Di Pumpo & Prima for organising and hosting the event – and to our speakers Mattia Manzati & Mattia Crovero for their great talks! See you at the next one!

Last month, we shipped a major refactor of the Effect AI SDK! Now you can watch it come together step by step with Maxwell Brown. youtube.com/playlist?lis...

PART 4: Developing a Twitch – Spotify Integration By Maxwell Brown youtu.be/4K8Sm_HsclM

Upcoming Effect events: 🔥 Office Hours – Oct 15 (every Wed) 🇮🇹 Milan Meetup – Oct 16 🇩🇪 Munich TypeScript Talk – Oct 20 🇫🇷 Intro to Effect, Nice – Oct 23 🇺🇸 SF Meetup – Oct 30 🇺🇸 NYC Meetup - Nov 19 Sign up for any event or subscribe below for updates: luma.com/effect-commu...

🔥 Effect Office Hours 3: Effect Atom, Ecosystem Tooling, Effect LSP By Kit Langton, Mattia Manzati, Maxwell Brown youtu.be/7iEx6s3Pr6Q

This Week in Effect: → Effect Office Hours 3 🔥 → AI SDK supporting Effect Schema → Effect Patterns Hub CLI by Paul Philip → Effect Course by Lucas Barake More in the blog post below: effect.website/blog/this-we...