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

MIT License

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📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings

javascript-algorithms

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javascript

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next.js

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Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

ponytail

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Coding articles to level up your development skills

Creative Commons Attribution 4.0 International

30-seconds-of-code

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Node.js JavaScript runtime ✨🐢🚀✨

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three.js

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

material-ui

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

Web-Dev-For-Beginners

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Production-grade engineering skills for AI coding agents.

agent-skills

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uptime-kuma

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svelte

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json-server

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anime

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career-ops

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Fast, unopinionated, minimalist web framework for node.

express

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

GNU General Public License v3.0

uBlock

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Simple HTML5 Charts using the <canvas> tag

Chart.js

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Extracted system prompts from Anthropic - Claude Fable 5.1, Opus 5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.

Creative Commons Zero v1.0 Universal

system_prompts_leaks

https://api.github.com/repos/leonardomso/33-js-concepts/contents/{+path}

📜 33 JavaScript concepts every developer should know.

33-js-concepts

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Agent skill for beautiful, verifiable architecture, workflow, sequence, data-flow, and lifecycle diagrams—self-contained HTML with motion and crisp export.

archify

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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, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.

webpack

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A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code by TÂCHES.

get-shit-done

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An advanced guide which might benefit you a lot 🎉 . 韩先凯的人生进阶指南 人生进阶指南 离谱的人生 人生进阶 AI学习 AI指南 韩先凯的AI学习指南 英语学习指南/英语学习教程/英语学习/学英语

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resume.github.com

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A modern JavaScript utility library delivering modularity, performance, & extras.

lodash

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atom

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jquery

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angular.js

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A professional front-end template for building fast, robust, and adaptable web apps or sites.

html5-boilerplate

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深度学习500问，以问答形式对常用的概率知识、线性代数、机器学习、深度学习、计算机视觉等热点问题进行阐述，以帮助自己及有需要的读者。 全书分为18个章节，50余万字。由于水平有限，书中不妥之处恳请广大读者批评指正。   未完待续............ 如有意合作，联系scutjy2015@163.com                     版权所有，违权必究       Tan 2018.06

DeepLearning-500-questions

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LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。)

leetcode

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The most comprehensive database of Chinese poetry 🧶最全中华古诗词数据库,  唐宋两朝近一万四千古诗人,  接近5.5万首唐诗加26万宋诗.  两宋时期1564位词人，21050首词。

chinese-poetry

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Prettier is an opinionated code formatter.

prettier

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⭐️  Companies that don't have a broken hiring process

hiring-without-whiteboards

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Semantic is a UI component framework based around useful principles from natural language.

Semantic-UI

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Marketing skills for Claude Code and AI agents. CRO, copywriting, SEO, analytics, and growth engineering.

marketingskills

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htmx

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Parse, validate, manipulate, and display dates in javascript.

moment

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An open source collection of animated, interactive & fully customizable React components for building memorable websites.

react-bits

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

bruno

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⚡ 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.

serverless

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30-Days-Of-JavaScript

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monaco-editor

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Apache License 2.0

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🍃 JavaScript library for mobile-friendly interactive maps 🇺🇦

BSD 2-Clause "Simplified" License

Leaflet

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edex-ui

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meteor

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reactjs-interview-questions

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GNU Affero General Public License v3.0

EasySpider

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The zero configuration build tool for the web. 📦🚀

parcel

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Front End interview preparation materials for busy engineers (updated for 2026)

front-end-interview-handbook

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uni-app

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The 1.x line is frozen - features and bugfixes now happen on https://github.com/yarnpkg/berry

yarn

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Open-source foundation of ToolJet AI - the enterprise app generation platform for internal tools, dashboards, business applications, workflows and AI agents. Build visually, from a prompt, or from Claude Code, Codex and Cursor over MCP 🚀

ToolJet

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Source for remoteintech.company — a community-maintained directory of remote-friendly tech companies

remote-jobs

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📄  Configuration files that enhance Cursor AI editor experience with custom rules and behaviors

awesome-cursorrules

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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.

phaser

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Video.js - open source HTML5 video player

video.js

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Free, simple, and intuitive online database diagram editor and SQL generator.

drawdb

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Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.

awesome-copilot

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⚛️ Fast 3kB React alternative with the same modern API. Components & Virtual DOM.

preact

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Materialize, a CSS Framework based on Material Design

materialize

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impress.js

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🤪 A list of funny and tricky JavaScript examples

Do What The F*ck You Want To Public License

wtfjs

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A spy satellite simulator in your browser, except the data is real. Live open source spatial intelligence on a photorealistic 3D globe.

gods-eye-view

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Fast and low overhead web framework, for Node.js

fastify

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:black_heart: Create and share beautiful images of your source code

Full name	Description	Watchers	Language
affaan-m/ECC	The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.	261433	JavaScript
trekhleb/javascript-algorithms	📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings	196764	JavaScript
airbnb/javascript	JavaScript Style Guide	148244	JavaScript
vercel/next.js	The React Framework	142335	JavaScript
DietrichGebert/ponytail	Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.	141618	JavaScript
Chalarangelo/30-seconds-of-code	Coding articles to level up your development skills	129134	JavaScript
nodejs/node	Node.js JavaScript runtime ✨🐢🚀✨	121984	JavaScript
mrdoob/three.js	JavaScript 3D Library.	115621	JavaScript
mui/material-ui	Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.	99052	JavaScript
microsoft/Web-Dev-For-Beginners	24 Lessons, 12 Weeks, Get Started as a Web Developer	96699	JavaScript
addyosmani/agent-skills	Production-grade engineering skills for AI coding agents.	96074	JavaScript
louislam/uptime-kuma	A fancy self-hosted monitoring tool	91508	JavaScript
sveltejs/svelte	web development for the rest of us	88131	JavaScript
FortAwesome/Font-Awesome	The iconic SVG, font, and CSS toolkit	76926	JavaScript
typicode/json-server	Get a full fake REST API with zero coding in less than 30 seconds (seriously)	75709	JavaScript
juliangarnier/anime	JavaScript animation engine	72891	JavaScript
career-ops-hq/career-ops	Open-source AI job search: scan job portals, evaluate listings into a structured A-H report with a global 1-5 score, tailor your CV, track applications — runs locally in your AI coding CLI (Claude Code, Codex, OpenCode, Antigravity…)	71990	JavaScript
expressjs/express	Fast, unopinionated, minimalist web framework for node.	69454	JavaScript
gorhill/uBlock	uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.	67941	JavaScript