TypeScript's 1:1 validator, optimized from editor to runtime

Runtime type system for IO decoding/encoding

TypeScript-first schema validation with static type inference

Scan for React performance issues and eliminate slow renders in your app

🐒 Normalize browsers' default style

Easily spot missing ARIA labels, misused ARIA roles, and incomplete keyboard support in your web applications.

Detect non-atomic interactions within DB transactions

Run multiple promise-returning & async functions with limited concurrency

The instant on-demand atomic CSS engine.

Headless Chrome/Chromium driver for Capybara

🦆 A curated list of awesome DuckDB resources

yq is a portable command-line YAML, JSON, XML, CSV, TOML and properties processor

The web framework for content-driven websites. ⭐️ Star to support our work!

A React Framework for building internal tools, admin panels, dashboards & B2B apps with unmatched flexibility.

The simplest way to add CSS styles to your React components.

DOMPurify - a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify works with a secure default, but offers a lot of configurability and hooks. Demo:

reveal.js on steroids! Get beautiful reveal.js presentations from any Markdown file

Optimize React performance and make your React 70% faster in minutes, not months.

A visual tool for inspecting and understanding your ESLint flat configs.

Straightforward way to implement communication between Rails Engines using the Publish-Subscribe pattern.

A cloud-native, multi-tenant Postgres connection pooler.

Postgres for Search and Analytics

dev tools, env vars, task runner

A SQLite extension which loads a Google Sheet as a virtual table.

🥢 A minimalist-friendly ~2.1KB routing for React and Preact

Open-source project. Tracking the available automation for accessibility. What a11y failures can be linted & tested for in an automated fashion?

Trigger.dev is the open source background jobs platform.

Fast Rust bundler for JavaScript/TypeScript with Rollup-compatible API.

Next-gen browser and mobile automation test framework for Node.js

Integrate Rails and Jupyter