Most marketing sites ship a SPA framework just to toggle a sidebar. Here's how we migrated an Astro site from React and Ark UI to native Web Components: 100 KB less JavaScript, no functionality lost, and a tiny library called nanotags that makes Custom Elements enjoyable to write.

A story of validating product demand on a $2K budget with 128 cold-traffic signups, an A/B winner at 95% confidence, and a sequenced playbook founders can run themselves.

The agent-led growth playbook: how to make AI agents discover, use, and pay for your developer tool, and defend against the ones you didn't invite. LLM discoverability, agent-first onboarding, agent payments, AX security.

Most AI SEO advice is unproven. We tested what ChatGPT, Claude, and Perplexity actually read on our own site. Six LLM visibility techniques that worked, eight that didn't, and the metrics to tell the difference.

Introducing rails_vite—a new Vite integration for Rails that works with Propshaft, not against it. Drop it into an existing jsbundling app for instant CSS HMR, or use the full gem for manifest-based asset resolution.

We unveil the gemfile toolbox of the Martian Rails engineer; a universe of Evil Martian gems that encapsulate our philosophy and soul.

Evil Martians migrated Wallarm's core event pipeline from NATS to Kafka in two months with zero downtime. Learn how we also handle event deduplication and reconstruct business flows for better understanding of the application.

Learn what's new in the world of slow tests and how TestProf continues to help Rails teams to keep CI build times under control.

We analyzed 1,140 early-stage funding rounds in developer tools, cybersecurity, and infrastructure from January 2025 through March 2026. Here are the top VCs and investors writing checks, the metrics that got companies funded, and the exact person to email based on what you're building.

NestJS is code-first by default meaning decorators describe your API, and the spec is generated from code. But decorators don't enforce anything at compile time. This post shows how to flip the flow to generate controller method types from an OpenAPI spec and let TypeScript catch contract drift before reaching production.

The final report for Ruby Association Grant on TutorialKit.rb—a toolkit for building interactive Ruby and Rails tutorials that run entirely in the browser using WebAssembly and WebContainers. Featuring a full-featured installer, agent-friendly development workflow, deployment pipelines, HTTP support, and real-world examples.

How do you measure product-market fit for a developer tool? A PMF scoring model from Evil Martians—a product development consultancy for developer tools startups—built on data from 37 devtools companies across AI, infrastructure, and cybersecurity. Five metrics, real benchmarks, and a dual score that tells you whether to invest in product or go-to-market.

Nothing could make me switch from Keynote to web-based slides. Then, I did! And as a WebSocket geek, I realized it opens up new opportunities! Here's my contribution to making your web presentations beautifully interactive.

Evil Martians is a developer tools consultancy. Founded in 2006, we work with about 40 early-stage startups a year, mostly seed to Series B. We helped bolt.new scale from zero to $40M+ ARR in 5 months. Teleport and Tines reached unicorn status with Martians on their teams.

Wire your OpenAPI contract into a Node.js Fastify backend with auto-generated routes, typed handlers, and request validation—no manual route definitions, no type drift, no integration surprises.

A deep dive extending Flipper in Rails: friendly actor IDs, team-wide flags, percentage rollouts, analytics events, and admin auditing.

Konstantin Vinogradov, an open source and infra VC investor, and his co-founders are building the first permanent funding model for critical open source infrastructure. We dive into why OSE stands a chance at battling the Nebraska problem, and how Evil Martians contributed as a pro-bono donor.

Transform your React development with contract-first APIs. Generate TypeScript types, build type-safe clients, and develop with mocks while backend implements—no more waiting, no more integration chaos.

An exhaustive and documented Docker configuration for developing Ruby and Rails applications

Write and ship modern custom RuboCop cops in 2026: learn the new plugin system, requires_gem API, InternalAffairs best practices, safe autocorrection nuances, and design trade-offs for building robust, future-proof lint rules.