Master programming by recreating your favorite technologies from scratch.

freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

A collective list of free APIs

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

Curated list of project-based tutorials

A book series (2 published editions) on the JS language.

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

刷算法全靠套路，认准 labuladong 就够了！English version supported! Crack LeetCode, not only how, but also why.

Production-ready platform for agentic workflow development.

《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新，English version in translation

A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

Virtual whiteboard for sketching hand-drawn like diagrams

Bring data to life with SVG, Canvas and HTML. 📊📈🎉

21 Lessons, Get Started Building with Generative AI

A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

FULL Augment Code, Claude Code, Cluely, CodeBuddy, Comet, Cursor, Devin AI, Junie, Kiro, Leap.new, Lovable, Manus, NotionAI, Orchids.app, Perplexity, Poke, Qoder, Replit, Same.dev, Trae, Traycer AI…

Build smaller, faster, and more secure desktop and mobile applications with a web frontend.

Clean Code concepts adapted for JavaScript

Python tool for converting files and office documents to Markdown.

Collection of awesome LLM apps with AI Agents and RAG using OpenAI, Anthropic, Gemini and opensource models.

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⚡ Dynamically generated stats for your github readmes

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Free and Open Source, Distributed, RESTful Search Engine

Model Context Protocol Servers

🌐 Make websites accessible for AI agents. Automate tasks online with ease.

The HTML Presentation Framework

RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

🔥 The Web Data API for AI - Turn entire websites into LLM-ready markdown or structured data

🐙 Guides, papers, lessons, notebooks and resources for prompt engineering, context engineering, RAG, and AI Agents.