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 the most popular repositories on Github, with over 100,000 stars, over 4500 commits, over 950 contributors, and over 25,000 forks.
The repo is now administered by the Free Ebook Foundation, a not-for-profit organization devoted to promoting the creation, distribution, archiving and sustainability of free ebooks. Donations to the Free Ebook Foundation are tax-deductible in the US.
Free Podcasts and Screencasts: