This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available over the Internet.
Throughout this site, other terms are used to refer to a book, such as ebook, text, document, monogram or notes.
All the books listed in this site are freely available, as they are hosted on websites that belong to the authors or the publishers.
In another word, we don’t host the books. We simply provide links to the books in PDF or HTML format available at the authors or the publishers websites.