Universal visualizer and analyzer for JavaScript and CSS. Compatible with most bundlers and frameworks

The Open Source Education Platform. A Simple and Beautiful Alternative to Moodle LMS, EdX, Thinkific and Teachable

A VS Code extension to visualize deoptimizations in your JavaScript and TypeScript code running in V8 (i.e., NodeJS, Edge, Chrome, etc.).

PartyKit simplifies developing multiplayer applications

Actor-based state management & orchestration for complex app logic.

🦋 A way to manage your versioning and changelogs with a focus on monorepos

fund the projects you love

TypeScript modules for more completeness and more soundness

Rust implementation of the callbag spec for reactive/iterable programming

A tool for writing better scripts

Replay.io DevTools

C++ State Machine generator for Xstate

Parse and manipulate JSON5 strings

A typescript language service plugin that gives superpowers to SQL tagged template literals.

A collection of libraries and tools that help you build adaptive, accessible, and robust user experiences.

Find descendants of a DOM node that are in the tab order

A easy (and fast) typescript validation library/macro. Automatically generate validation functions for Typescript types.

An advanced static type checker

🌲 Manage React state with Behavior Trees

A blazing fast 100% spec compliant, self-hosted javascript parser written in Typescript

🃏A Jest runner for the TypeScript compiler

Measure the real, minified, tree-shaken impact of individual imports into your app

✍ It has never been so easy to document your things!

A familiar and performant compile time CSS-in-JS library for React.

The Runner for GitHub Actions 🚀

🎁 Dev and build your code painlessly in monorepos

⏱️ Investigates v8/Node.js function deoptimizations.

🤖 A functional, immutable Finite State Machine library