Top Best Free Ebook

Project Gutenberg, the first producer of free electronic books (ebooks). This site is the oldest producer of free ebooks on the Internet. Their collection, pieced together by thousands of volunteers, now amount to over 20,000 works which have fallen into public domain. With great numbers however, comes the headache of picking true literary gems from the fodder - That’s why this Top 100 page is so valuable.
http://www.gutenberg.org/wiki/Main_Page

BookMooch is a community for exchanging used books. BookMooch lets you give away books you no longer need in exchange for books you really want.
http://www.bookmooch.com/

EbookSpyder. This site specializes in technical books ranging anywhere from C# to AJAX. Many commercial works can be found here though.
http://www.ebookspyder.net/

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