The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

JavaScript 3D Library.

Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.

24 Lessons, 12 Weeks, Get Started as a Web Developer

A fancy self-hosted monitoring tool

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

JavaScript animation engine

A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs,…

uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

Independent technology for modern publishing, memberships, subscriptions and newsletters.

⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API

</> htmx - high power tools for HTML

Cheatsheets for experienced React developers getting started with TypeScript

⚡ Serverless Framework – Effortlessly build apps that auto-scale, incur zero costs when idle, and require minimal maintenance using AWS Lambda and other managed cloud services.

A tool for writing better scripts

A visual no-code/code-free web crawler/spider易采集：一个可视化浏览器自动化测试/数据采集/爬虫软件，可以无代码图形化的设计和执行爬虫任务。别名：ServiceWrapper面向Web应用的智能化服务封装系统。

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Call all Node.js modules directly from DOM/WebWorker and enable a new way of writing applications with all Web technologies.

Video.js - open source HTML5 video player

Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

✂️ Modern copy to clipboard. No Flash. Just 3kb gzipped 📋

Visualizer for neural network, deep learning and machine learning models

High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP, AVIF and TIFF images. Uses the libvips library.

⚡️ Streaming torrent client for the web

A simple HTML5, YouTube and Vimeo player

Create the next immutable state by mutating the current one

Ace (Ajax.org Cloud9 Editor)

React components for efficiently rendering large lists and tabular data

A window.fetch JavaScript polyfill.

Vercel's official collection of agent skills