Master programming by recreating your favorite technologies from scratch.
Repository Index
47,133 repositories indexed
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😎 Awesome lists about all kinds of interesting topics [NOTE: Pull requests are temporarily disabled until I have a chance to catch up with the existing ones]
A collective list of free APIs
freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
:books: Freely available programming books
The AI that really does things. Any OS. Any Platform. The lobster way. 🦞
Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.
Interactive roadmaps, guides and other educational content to help developers grow in their careers.
A complete computer science study plan to become a software engineer.
A list of Free Software network services and web applications which can be hosted on your own servers
The definitive list that answers "I want to do X in Python, which tool should I use?"
An agentic skills framework & software development methodology that works.
Skills for Real Engineers. Straight from my .agents directory.
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Curated list of project-based tutorials
Repo for counting stars and contributing. Press F to pay respect to glorious developers.
DeepSeek Harness: Everything is a Plugin.
The agent that grows with you
A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.
Linux kernel source tree
The library for web and native user interfaces.
A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.
All Algorithms implemented in Python
The open source coding agent.