Bartleby Online: Great Books Online
This site is self-described as "the preeminent Internet publisher of literature, reference and verse, providing students, researchers and the intellectually curious with unlimited access to books and information on the web, free of charge."
Bibliomania: Free Online Literature and Study Guides
Site includes more than 2,000 free texts of fiction, drama, poetry and short stories, as well as study guides, reference resources, author biographies and book summaries.
Page by Page Books
Site includes hundreds of classic books to read online, absolutely free. Browse texts by author or title.
Project Gutenberg: Free e-Books
This online project offers free, full-text access to 18,000 books.
Shakespeare Online is geared for students, teachers, and Shakespeare enthusiasts. The site includes free, full text access to plays and sonnets, as well as a variety of essays on Shakespeare and Elizabethan England.