Free programming books

This list was originally a clone of StackOverflow - List of Freely Available Programming Books with contributions from Karan Bhangui and George Stocker. The list was moved to GitHub by Victor Felder for collaborative updating and maintenance. It has grown to become one of GitHub's most popular repositories, with 243,000+ stars, about 9,700 watchers, more than 7,100 commits, 1,900+ contributors, and 50,000+ forks.