Bibliomania
A free online literature with more than 2000 classic texts.
http://www.bibliomania.com/
Digital Book Index
Provides links to more than 139,000 full text digital books from more than 1800 commercial and non commercial publishers, universities and various private sites.
http://www.digitalbookindex.org/about.htm
E-books directory
This is a daily growing list of freely downloadable ebooks, documents and lecture notes found all over the internet. You can submit and promote your own ebooks, add comments on already posted books or just browse through the directory and download anything you need.
http://www.e-booksdirectory.com/
Internet Archive
The Internet Archive is a non-profit organization that was founded to build an Internet library. The Internet Archive is working to prevent the Internet - a new medium with major historical significance - and other "born-digital" materials from disappearing into the past.
http://archive.org/details/texts
National Academies Press
Read more than 3,000 books online for free. Covers subjects on Engineering & Technology, Health & Medicine, Earth Sciences, Environmental Studies, Energy conservation, Food & Nutrition etc.
http://www.nap.edu/topics.php?browse=1
Project Gutenberg
The first and oldest producer of free electronic books.
http://www.gutenberg.org/wiki/Main_Page
Tech Books
This site provides technology books free for download. Mostly subjects on science & technology.
http://www.techbooksforfree.com/
World Public Library
The WPLD Collection shelves more than 2,000,000 + PDF e-books in 100+ languages containing 125 of the finest eBooks and eDocument published on the Internet today.
http://worldpubliclibrary.org/Default.aspx
