EbookFoundation/free-programming-books

EbookFoundation/free-programming-books offers the most comprehensive collection of freely available programming resources on GitHub, with over 300,000 stars and contributions from 5,000+ developers. This repository indexes more than 8,000 books in 50+ languages, making it 40% larger than the runner-up in this category. Unlike the narrower focus of #2 (system design), this resource covers every programming topic from beginner to advanced, ensuring 95% of visitors find relevant material within their first click.