Top JavaScript Repositories

A harness-native agent operating system for AI coding tools. 67+ specialized agents, 279+ skills, automated hooks, continuous learning, and security scanning (AgentShield) — production-ready workflows across Claude Code, Codex, Cursor, OpenCode, Gemini, and more.

React is a JavaScript library for building user interfaces. It enables developers to create interactive UIs with declarative, component-based architecture. React can render on the server and power mobile apps via React Native.

A comprehensive collection of JavaScript-based algorithms and data structures with detailed explanations, tests, and educational resources for learning computer science fundamentals.

JavaGuide is a comprehensive Java learning and interview preparation guide, covering core Java, computer science fundamentals, databases, distributed systems, high concurrency, and system design for job seekers.

Ponytail is a lightweight plugin and ruleset for 20+ AI agents (Claude Code, Cursor, Copilot, etc.) that prevents code over-engineering. By guiding AI to prioritize native APIs and standard libraries, it significantly cuts generated code size, token cost, and latency without compromising safety.

A mostly reasonable approach to JavaScript. This comprehensive style guide provides best practices and conventions for writing clean, maintainable JavaScript code, covering topics from types and references to modules and testing.

Next.js is a React framework by Vercel for building full-stack web applications with Server Components, hybrid rendering (SSR/SSG/ISR), built-in optimizations, API routes, and Rust-powered tooling like Turbopack for lightning-fast builds.

A curated collection of short coding articles and code snippets to level up your development skills. Covers JavaScript, CSS, Python, React, Node.js and more with clear explanations and examples.

Node.js is an open-source, cross-platform JavaScript runtime environment. It enables developers to build high-performance server-side applications, CLI tools, APIs, and real-time services using JavaScript, powered by the V8 engine and an asynchronous, event-driven architecture.

Three.js is a lightweight, cross-browser JavaScript 3D library that simplifies WebGL and WebGPU rendering. It enables developers to create and display animated 3D computer graphics in the browser with ease.

Promise based HTTP client for the browser and node.js. Supports making XMLHttpRequests from the browser and http requests from Node.js, with features like interceptors, automatic JSON transformation, request cancellation, and XSRF protection.

Create React App is an officially supported toolchain for building single-page React applications with zero configuration. It provides a modern build setup with no build configuration required, allowing developers to focus on writing code.

A comprehensive collection of 24 production-grade engineering skill workflows for AI coding agents, covering the full software lifecycle — from idea refinement, spec-driven development, and test-driven implementation to code review, security audit, performance optimization, and shipping. Features anti-rationalization guards, specialist agent personas, slash commands, and works across Claude Code, Cursor, Gemini CLI, Copilot, and more.

Material UI is a comprehensive React component library implementing Google's Material Design system. Battle-tested over a decade, it provides production-ready, customizable components trusted by top product teams worldwide.

A comprehensive 12-week, 24-lesson web development curriculum by Microsoft Cloud Advocates. Learn JavaScript, CSS, and HTML fundamentals through hands-on projects including terrariums, browser extensions, space games, and a banking app. Includes quizzes, assignments, and practical exercises for beginners.

Software engineering principles from Robert C. Martin's Clean Code book, adapted for JavaScript. A guide to producing readable, reusable, and refactorable JavaScript code.

A collection of portable Agent Skills that upgrade AI coding agents (Codex, Cursor, Claude Code) to produce premium frontend UI instead of generic, boilerplate output. Includes 12 skills covering layout, typography, motion, spacing enforcement, anti-slop design rules, image-to-code workflows, existing project redesign, and image generation for reference boards. Framework-agnostic with adjustable design dials.

Uptime Kuma is a fancy, easy-to-use self-hosted monitoring tool. It supports monitoring HTTP, TCP, DNS, Docker containers, and more, with notifications via Telegram, Discord, Slack, and 90+ services. Features include multi-language support, status pages, 2FA, and a reactive UI.

Svelte is a compiler-based web framework that converts declarative components into efficient JavaScript, surgically updating the DOM without a virtual DOM for optimal performance.