There are a good number of electronic books, popularly known as e-books are available on the internet for free of cost. They are available in most of the subject areas. Some are available for browsing and many titles are for download. Please go through the following links for more information.
Bartleby.com provides free full text online access to reference, literature and verse books.
Books-On-Line.com provides access to full text of books. Includes both free and priced books in its collection. The books are available on all the subject areas classified by using Dewey Class numbers.
Classic Bookshelf is a very good site, makes reading online enjoyable with its customization features. Contains old classics.
Computer Books is a free collection of computers from all over the world.
Ebrary holds collection of e-books on various subjects. Only viewing is free. To browse one has to download their plugin.
Electronic Literature Foundation : Great Books contains around 109 online books on literature. The site provides free access to all the works. Some of the works included are The Rubaiyat of Omar Khayyam, Dante's Divine Comedy, Chaucer's Canterbury Tales, the novels of Jane Austen, and more.
English Server Fiction Collection site offers works of and about fiction collected from their members, contributing authors worldwide, and texts in the public domain.
Freebooks4doctors is dedicated to the promotion of free access to medical books over the Internet. There are a good number of titles available on different aspects of medical sciences. It provides links to free of cost e-books available on different sites.
Free online Books provides links to online full text of educational and technical books. Also provides links to online course, workshops, etc.
Free Programming and Computer Science Books here you may download programming and computer science books for FREE!.
Free Tech Books lists free online computer science and engineering books + lecture notes.
Internet Public Library [IPL] e-books provides links to around 20000 e-books on various subjects. The subjects are classified by using Dewey Decimal classification.
Library of Economics and Liberty provides access to full text of classic economics books, essays and articles.
Manybooks provides access to 10,158 eBooks formatted for reading on your Palm,Pocket PC, e-book reader etc.
National Academies Press e-books provide FREE online access to its e-books collection. Right now it holds around 1500 titles. Free PDF versions are available to readers from developing countries.
Oapen Library is collaborative initiative to develop and implement a sustainable Open Access publication model for academic books in the Humanities and Social Sciences. Provides free access to books.
Online Books Page facilitates access to books that are freely readable over the Internet. It also aims to encourage the development of such online books, for the benefit and edification of all. Books are available in all subject areas.
Online Library of Literature contains excellent collection of literature books.
Open Book Project provides access to good number of computer books. These are available for browsing and also saving of chapters in HTML format is possible.
Page by Page Books Online contains lot of classic books, which can read online for free.
Project Gutenberg gives online access to full text of classic books on different subjects, which are published pre 1923. The project does not cover any of the copyrighted material. One can download texts required for his/her use.
Read Print is a free online library. It offers thousands of free books for students, teachers, and the classic enthusiast.
University of California Press e-books here excerpts of eBooks are available for free browsing covering different subject areas.
University of Toronto English Library provides full text access to collection of classic works in English literature. The collection includes prose, poetry and fictions.
World e-book Library is a global coordinated effort to preserve and disseminate classic works of literature, serials, bibliographies, dictionaries, encyclopaedias, and other reference works in a number of languages and countries around the world. Provides free access to collection listed under 'Public'.