There are 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

A very good site, makes reading online enjoyable with its customization features. Contains old classics.

Computer Books

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

This site offers works of and about fiction collected from their members, contributing authors worldwide, and texts in the public domain.

Freebooks4doctors

FreeBooks4Doctors is dedicated to the promotion of free access to medical books over the Internet. There is good number of titles available on different aspects of medical sciences. It provides links to free of cost e-books available on different sites.

Health Books

Provides links to free of charge electronic books available on different aspects of medical sciences.

Internet Public Library e-books

IPL 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: Free ebooks for your PDA

Provides access to 10,158 eBooks formatted for reading on your Palm, PocketPC, Zaurus, Rocketbook, or Symbian cellphone.

National Academies Press e-books

Provides 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.

Online Books Page

The 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

It 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

It is a free online library. It offers thousands of free books for students, teachers, and the classic enthusiast.

Sunsite India: Virtual Library

Provides links to full text of computer books. The books covered here are bit old, but still worth to visit.

University of California Press e-books

Around 60 titles 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

It is a global coordinated effort to preserve and disseminate classic works of literature, serials, bibliographies, dictionaries, encyclopedias, and other reference works in a number of languages and countries around the world. Provides free access to collection listed under ‘Public’.

Bookboon.com

Provides a unique view on the subject of evidence, proof and justice.

E-books.com

Holds a collection of law books. Available in preview mode .

Project Gutenberg

Contains popular law books in PDF and HTML formats. Provides free online access to read and download books.