We just donated to @wooorm.com as part of our OSS donation program! He's an engineer based in the Netherlands and the maintainer of 550+ projects. If your project uses Markdown, it probably already runs on one of his tools. His most well-known one is mdx for writing Markdown with JSX components.

We stopped donating to your open source project every month. Here's why. We believe keeping OSS maintainers motivated and showing them we value their work can help prevent burnout. So we're starting a new process for frontend solutions: 🧵

In our new blog post, @inazarova.bsky.social analyzed 1,140 early-stage funding rounds in devtools, cybersecurity, and infrastructure. Three stories jumped out.

Part 5 of our contract-first series. This time: NestJS. It's had an open issue for spec-first support since 2020 so Yuri Mikhin built a plugin for Hey API, and contributed it upstream. One implements clause and your controllers either match the spec or the build fails:

Meet Sasha (@aleksandrsl.bsky.social), one of our frontend engs. He's a biotechnician turned engineer based in Düsseldorf, Germany. He's collaborative, loves to solve real problems with his work, plays the drums, and will always say yes to a cup of coffee. Check out his work: shorturl.at/v46bE

Tips to protect your projects from supply chain attacks:

The final report for Ruby Association Grant on TutorialKit.rb is out—a toolkit for building interactive Ruby and Rails tutorials that run entirely in the browser using WebAssembly and WebContainers. Features a complete installer, agent-friendly deployment pipelines, HTTP support, and real examples.

PMF means 40%+ of users would be "very disappointed" without your product. True, but vague. We researched 35+ successful devtools and broke PMF down into tangible steps with clear metrics. Answer a few questions at evilmartians.com and get a personalized path to PMF.

No one could actually explain what PMF is or how to find it... until @inazarova.bsky.social conducted thesis-grade research on 35+ successful devtool companies. She built a PMF compass that tells you exactly what to do next based on where you are.

Spreadsheets weren't built for managing complex multi-entity financial structures. SumIt is fixing that for family offices, and they've grown to $30B+ in managed assets. We helped build the Rails and Hotwire foundation that powers it. Here's what its CTO has to say about our collaboration:

We work with ~40 early-stage startups a year. Most founders confuse product-market fit with signups, but these are a vanity metric. We recently studied 25+ successful devtool businesses and found exactly what they're missing to get PMF. We're ready to share findings with you. March 23rd. 👀

We're sponsoring this event in NYC. Svelte users, come join us!

Loved this episode with @jayroh.dev on maintainability & predictability. And yes — it’s imgproxy, not ImageProxy 😉 Great example of how to migrate safely with adapters + feature flags instead of risky rewrites: buff.ly/oisS8Ng

Nano Stores seems to be my fastest-growing open source project right now. 10x growth over the past year! github.com/nanostores/n...

New imgproxy release! imgproxy v3.31.0 is out, followed by a patch release v3.31.1. Release notes: v3.31.0: buff.ly/qbPO4YC v3.31.1: buff.ly/eEQrO4K

"A deployed web presentation is a real web app, and I can connect it to a WebSocket service and get real-time communication between me and the audience!" writes @inazarova.bsky.social when introducing Slide Quiz. This is a plugin for live quizzes for web presenting frameworks. Try it for yourself:

@en.sitnik.es is our frontend principal and the creator of PostCSS, Nano Stores, and Autoprefixer. His interview with Dan Nicu is now live on YouTube. They chatted about Andrey's career, the story of how he created popular open source tools, and his thoughts on AI and open source. Watch it here:

Meet Arthur (@objartel.bsky.social),one of our product designers. Arthur designs beautiful UIs, helps shape products, understands the trade-offs of his decisions, and simplifies engineers' work. He's based in Warsaw, plays the drums, and loves good coffee. See his work: url-shortener.me/H2KU

Here's why devtools startups hire Evil Martians: we helped @bolt.new scale from zero to $40M+ ARR in 5 months. Teleport and Tines reached unicorn status with Martians on their teams. And that's just the tip of the iceberg.

My colleague just published the 4th and final part of his great series on the API-first approach to building web apps. For me, this approach has basically become the default by now.

Yuri Mikhin from @evilmartians.com is back with another article, this time showcasing contract-first development with OpenAPI, Fastify, and Hey API. Link in the comments!

You know that feeling when you generate a typed SDK from your API spec on the frontend? No manual types, everything in sync, life is good. Now imagine the same thing but for backend: your OpenAPI spec generates typed route handlers and you just... implement them. Read this walkthrough:

Most founders spend years chasing PMF with no compass. We're changing that on March 23rd. 👀 Save the date.

Love to read this. Repo link for the skills @kaspth.com mentions: github.com/palkan/skills

I've also been reading through @palkan.bsky.social's & @evilmartians.com Layered Design for Rails and it's cool to see many similar ideas for where I'd like to see Rails go (and Associated Objects gets a mention). There's lots of interesting ideas and patterns in there, so I highly recommend it!

Flipper is an amazing feature flag gem. This guide by @envek.bsky.social is a deep dive into how we used it to match our client's (@stackblitz.com) requirements. Inside: friendly actor IDs, team-wide flags, percentage rollouts, analytics events, and admin auditing!

February's SF Ruby Meetup is now live on YouTube! We met at @sentry.io and had talks from: - Neil Manvar - Sohil Kshirsagar - Mike Dalton (@kcdragon.bsky.social) - Vladimir Dementyev (@palkan.bsky.social) - Brandon Weaver (@baweaver.bsky.social) Watch Feb's recording:

Meet Andrey (@en.sitnik.es ), our frontend principal and the creator of PostCSS. He was our first hire ever and has been a Martian for 15 years. Andrey is based in Barcelona, is a loving father, and is always down to meet up with martians IRL. Check him out: evilmartians.com/martians/and...

We knew Martians were some of the best of their kind. So we're building individual portfolios to show it and allow clients to: - Get paired with the best person for their project - Understand the background of the one joining their team This process has made us feel incredibly proud of Martians.

Just take a look at the awesome personal pages we’ve created for developers/designers on @evilmartians.com. My profile is ready too. evilmartians.com/martians/and... evilmartians.com/martians/art... evilmartians.com/martians/ale... evilmartians.com/martians/ant... evilmartians.com/martians/gle...

PostCSS powers 0.5% of ALL web pages but only earned $300/month for 13 years. This story is not unique. Your app likely has 550+ OSS dependencies. Most are one burned-out maintainer away from disaster. This is the Nebraska problem. And here is the fix: evilmartians.com/chronicles/s...

You’re still hand-writing API types in 2026? Your OpenAPI spec can generate TypeScript types, API clients, Zod schemas, and network-level mocks — so you ship features before backend deploys anything. Yuri Mikhin walks through the full setup with Hey API, Nanostores, and MSW.

Harjot Gill bootstrapped @coderabbitai.bsky.social to $1M ARR before raising a $16M Series A. That was followed by a $60M Series B, and now revenue is doubling every few months. In the episode of Dev Propulsion Labs, Harjot shares why the open source version plays a huge role in that growth.

Ruby on Whales has received a huge upgrade for 2026, including Claude Code integration and more. Read this new but still exhaustive guide by @palkan.bsky.social on developing Ruby and Rails applications with Docker.

Five years ago, we posted an article on writing custom RuboCop rules (called "cops"). Since then, RuboCop had a major release with new features that make your custom rules way better. This article by Yaroslav Kurbatov revisits our previous post and explains how to write custom cops today:

Join early access for imgproxy v4 and help shape the new version!

PostCSS creator, @en.sitnik.ru, shares how to make your open source popular. He also destroys the false idea that writing open source will make you famous, or that you should write open source to show your expertise. Plus, he explains how to avoid burnout when maintaining your products.

We're still looking for a frontend engineer to work on @en.sitnik.ru's team. We're a fully remote team with 20 years of async work experience that offers: - 34-39 days off (including national holidays) - The possibility of relocating to Lisbon (not mandatory) - $80K – $113K gross annual salary

We get our industry news from @anycable.io's Broadcast. Issue #33 came with the sad news that Heroku is no longer taking on new business and is moving into maintenance mode. Heroku users can keep running things as usual for now, but it might be a good time to start looking at alternatives.

“The future is here, it’s just not evenly distributed,” says David Gomes from @cursor.com.web.brid.gy. He estimates that 50% of the world’s engineers have yet to try agentic coding, and that at least 7 billion people still need to adopt LLMs.

Vibe coding can speed up app development, but it can also quietly introduce serious security flaws. This article breaks down the four most common risks and how to avoid them: evilmartians.com/chronicles/f...

We’re expanding the benefits of ruby.wasm within the Ruby community (and beyond). This update for the Ruby Association Grant introduces our new project, TutorialKit.rb. It's a toolkit for building interactive Ruby and Rails tutorials that run entirely in the browser.

What if new hires could understand your entire codebase on day one? @baweaver.bsky.social thinks this is possible with MCP tools. An AI agent could become an expert in your codebase and make institutional knowledge available 24/7 for any team member. Watch his SF Ruby Conference talk:

Aptos asked us to rebuild their website in one month. That meant collaborating with designers, negotiating scope, and choosing the right tech stack. In this post, we share secret tips that helped us deliver on time, the lessons we learned, and examples you can steal to meet a tight deadline.

Can AI really turn us all into a “10x engineer,” or is that just a pipe dream? AI has quickly reshaped software development and the benefits are still unclear. This research-backed article attempts to uncover what you can expect from developers who regularly use AI to speed up their work:

In case you missed it, @anycable.io v1.6.9 comes with: - Durable Streams support (via @electric-sql.com) - A new REST API for publishing broadcasts - mTLS support for Redis - Pusher Get Channel Users API Check out the details: docs.anycable.io/release_note...

Successful founders aren’t afraid to start over. We’ve seen this pattern repeatedly on our pod. Take Monica Sarbu. She made the call to restart Xata, shifting focus from builders to SMBs. In this episode, she tells Vica how they invest in user research and let those insights guide decisions.

When shipping with AI, if something breaks, the problem is often not about the AI itself. Rather, it's about the decisions you make. For dev tools, the most expensive mistake is deciding to build something that doesn’t actually fit how people work.

Dave’s (@pragdave.bsky.social) talk is the most popular one from the 2025 SF Ruby Conference, by far. “Start writing Ruby, stop using classes” is a masterclass on writing Ruby, choosing modules over classes, and questioning the habits we inherited from C++.

Dave’s (@pragdave.bsky.social) talk is the most popular one from the 2025 SF Ruby Conference, by far. “Start writing Ruby, stop using classes” is a masterclass on writing Ruby, choosing modules over classes, and questioning the habits we inherited from C++.