Easy and fast book searcher, create and search your private library.

This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available.

一个自由开放的在线古籍图书馆

一个书籍推荐网站

Very well categorized. Equipped with advanced search engines.

一个提供免费电子书下载的在线网站.