Master programming by recreating your favorite technologies from scratch.

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

21 Lessons, Get Started Building with Generative AI

🤯 Lobe Chat - an open-source, modern design AI chat framework. Supports multiple AI providers (OpenAI / Claude 4 / Gemini / DeepSeek / Ollama / Qwen), Knowledge Base (file upload / RAG ), one click install MCP Marketplace and Artifacts / Thinking. One-click FREE deployment of your private AI Agent application.

An open source payments switch written in Rust to make payments fast, reliable and affordable

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Production-ready platform for agentic workflow development.

An AI Hedge Fund Team

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

12 Lessons to Get Started Building AI Agents

This is a repo with links to everything you'd ever want to learn about data engineering

Truly independent web browser

🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN

A collective list of free APIs

real time face swap and one-click video deepfake with only a single image

🙌 OpenHands: Code Less, Make More

The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance.

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

Building a modern alternative to Salesforce, powered by the community.

📚 Freely available programming books

科技爱好者周刊，每周五发布

The personal finance app for everyone

Financial data platform for analysts, quants and AI agents.

Python tool for converting files and office documents to Markdown.

利用AI大模型，一键生成高清短视频 Generate short videos with one click using AI LLM.