Online books

http://english-e-books.net/

http://www.loyalbooks.com/

http://www.bookrix.com/books.html

http://bookboon.com/en/english-language-ebooks

http://www.classicbookshelf.com/

http://onlinebooks.library.upenn.edu/search.html

http://www.gutenberg.org/wiki/Main_Page

http://classicbook.info/

http://www.readprint.com/

http://www.fiction.us/

http://www.bibliomania.com/