Collection of handy online tools for developers, with great UX.

⚡️ TypeScript Execute | The easiest way to run TypeScript in Node.js

High-performance In-browser LLM Inference Engine

StyleX is the styling system for ambitious user interfaces.

CSS-in-JS compiler inspired by Meta's stylex

ENGR100-980 - Rocket Science

Build rich content websites with Markdown and React

Set up your GitHub Actions workflow with a specific version of chromium

Tools and tutorials

😱 Falsehoods Programmers Believe in

Syntax highlighting, like GitHub

Excalidraw for Visual Studio Code

Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.

Esprima-compatible implementation of the Mozilla JS Parser API

Suppress existing violations of new eslint rules and get back to building stuff.

A JavaScript codemod toolkit.

Code Verify is an open source web browser extension that confirms that your Facebook, Messenger, Instagram, and WhatsApp Web code hasn’t been tampered with or altered, and that the Web experience y…

Interactive Program Visualization Tools

A utility for managing cargo dependencies from the command line.

Pretty diff to html javascript library (diff2html)

A JavaScript Internationalization Framework

This module permits to convert HTML to the PDFMake format

Client/server side PDF printing in pure JavaScript

A JavaScript PDF generation library for Node and the browser

Use JSX to create DOM elements.

Build cross-platform desktop apps with JavaScript, HTML, and CSS

Unicode text segmentation for ECMAScript

A Jekyll layout that compresses HTML in pure Liquid

Build a table of contents from headings in an HTML document.

The web's best unicode lookup tool!