A library of 17000 free ebooks whose copyright has expired in the USA Book listings
Project Gutenberg

Alex Catalogue of Electronic Texts is a collection of public domain documents from American and English literature as well as Western philosophy.
http://www.infomotions.com/alex

Open e-print archive with over 100000 articles in physics, 10000 in mathematics, and 1000 in computer science.
http://www.arxiv.org

Athena Thousands of mainly French and Swiss-authored e-texts, across a broad range of especially Literature, Science & the Arts.
http://un2sg4.unige.ch/athena/html/athome.html

Bibliomania - Free Online Literature and Study Guides
800+ texts of classic literature, drama, and poetry together with detailed literature study guides. Large reference book and non-fiction section.
http://www.bibliomania.com

Bibliotheca Augustana A Latin e-library. Includes Bibliothecae Latina, Graeca, Anglica, Gallica, Germanica, Hispanica, Italica, Iiddica, Lusitana, Polonica et Russica. Collectio textuum electronicorum. Hae paginae proponent Musa adiuvante in lingua Latina - facta et ficta.
http://www.fh-augsburg.de/~harsch/a_index.html

CELT (Corpus of Electronic Texts). Irish literary, historical & cultural texts, in Irish, Latin, Anglo-Norman French, and English. Presented in HTML, with a searchable online database. An initiative of University College, Cork, Republic of Ireland.
http://www.ucc.ie/celt

CogPrints Cognitive Sciences Eprint*. Repository of freely available preprint and reprint papers, submitted by authors.
http://cogprints.soton.ac.uk

Complete Works of William Shakespeare but minus his poetry at present. The plays can be read either as a continuous text or by individual scenes. For reading online, in HTML.
http://the-tech.mit.edu/Shakespeare/works.html

The Digital Library of the Commons (DLC) is a gateway to the international literature on the commons. This site contains an author-submission portal; an archive of full-text articles, papers, and dissertations; the Comprehensive Bibliography of the Commons; a Keyword Thesaurus, and links to relevant reference sources on the study of the commons.
http://dlc.dlib.indiana.edu

The Digital Library for Earth System Education (DLESE) is a distributed community effort involving educators, students, and scientists working together to improve the quality, quantity, and efficiency of teaching and learning about the Earth system at all levels.
http://www.dlese.org/

Digital Library of Information Science and Technology: dLIST is a cross-institutional, subject-based, open access digital archive for the Information Sciences, including Archives and Records Management, Library and Information Science, Information Systems, Museum Informatics, and other critical information infrastructures.
http://dlist.sir.arizona.edu/

Ebooks Online Library A digital library for everyone, particularly for the partially sighted and visually impaired. Around a dozen authors ranging from Aesop to Sun Tzu, with huge representation of Charles Dickens & Sir Arthur Conan Doyle, plus a goodly measure of Jules Verne & Mark Twain. In very clear HTML for online reading.
http://www.readasily.com/

Elfwood Elfwood is a huge, non-profit home to the worlds biggest site for fantasy and science fiction Art and Fiction. In this enchanted forest you will find more fantasy and science fiction art than you could ever dream of.
http://elfwood.lysator.liu.se

The E Server is an arts and humanities e-publishing coop based at Iowa State University where hundreds of writers, editors and scholars gather to publish over 35,000 works free of charge.
http://eserver.org

Electronic Text Collections in Western European Literature Links site for literary texts in Western European languages other than English. Languages include Catalan, Danish, Dutch, Finnish, French, Galician, German, Greek, Irish, Italian, Norwegian, Portuguese, Spanish & Swedish.
http://www.lib.virginia.edu/wess/etexts.html

Electronic Texts On The Internet A useful links page with over eighty entries.
http://www.refdesk.com/factelec.html

EuroDocs Links to sites with primary historical documents for European countries and regions. Includes prehistoric and ancient Europe.
http://eurodocs.lib.byu.edu

Great Books Index Llinks to online works, in English translation, by more than 130 classic authors.
http://books.mirror.org/gb.home.html

Great Books and Classics Provides free HTML online versions of many famous authors from before 200 BC to the 20th Century.
http://www.grtbooks.com

Internet Classics Archive More than 440 online works of classical literature with a powerful search facility. A booklist links directly to relevant pages in online bookshops.
http://classics.mit.edu

Internet Public Library. The Internet Public Library's Mission Statement says: " The Internet Public Library (IPL), is a public service organization and learning/teaching environment at the University of Michigan School of Information. The IPL contains over 20,000 free books available online.
http://www.ipl.org/reading/books

Kurt Stüber's Online Library - a collection of historic and modern biology books. Large library of books on biological subjects, many currently out of print and hard to obtain.
http://www.zum.de/stueber/

MIT OpenCourseWare is a collection of course materials, which available on the Internet by Massachusetts Institute of Technology , for free download. The MIT contains over 500 different materials. Most of the materials are in English, but a number are also available in Spanish & Portuguese.
http://ocw.mit.edu/index.html

National Academy Press contains over 3,000 National Academy science, engineering, and health texts online.
http://www.nap.edu

Networked Digital Library of Theses and Dissertations (NDLTD)is a network of digital theses and dissertations available in many countries over the world including the USA, Canada, many European nations, Hong Kong, Taiwan, and Australia.
http://www.ndltd.org/

Online Books Page offers access to more than 16,000 books online by University of Pennsylvania.
http://digital.library.upenn.edu/books

Online Medieval and Classical Library
http://sunsite.berkeley.edu/OMACL

Oxford Text Archive From Oxford University, high-quality, well-documented electronic texts for research and teaching. Contains over 2,500 resources in 25 different languages. Public domain texts are available for free and may be downloaded in different formats.
http://ota.ahds.ac.uk

Pennsylvania State University Electronic Classics Site: e-Books are available as .pdf files, which you can read with the Adobe Acrobat Reader. The website contains many classical books in English, and original works published by Penn.
http://www2.hn.psu.edu/faculty/jmanis/jimspdf.htm

Perseus Project A great classical digital library website, with Greek and Latin texts, commentaries, an atlas, coin images, art, archaeology, and much more.
http://www.perseus.tufts.edu

Project Libellus Latin texts by the University of Washingto,. which readable in your web browser.
http://www.hhhh.org/perseant/libellus

Project Madurai So far contains over 240 works in Tamil script, and also in TSCII (Tamil Script Code for Information Interchange) format.
http://www.tamil.net/projectmadurai/

Project Runeberg Over 300 titles, in Swedish, Norwegian, Danish, and Icelandic, which publishes free electronic editions of old Nordic literature on the Internet.
http://www.lysator.liu.se/runeberg

SAIL-eprints Scientific or technical documents in Chemistry, Physics, Engineering, Materials Sciences, Nanotechnologies, Microelectronics, Computer Sciences, Astronomy, Astrophysics, Earth Sciences, Meteorology, Oceanography Agriculture and much more.
http://eprints.bo.cnr.it

Soil And Health Library Free public library offering books on agriculture and health holistic, self-sufficient living, and self improvement.
http://www.soilandhealth.org

Universal Library The principal benefit of the Universal Library will be to supplement the formal education system by making knowledge available to anyone.The project have content in many Indian and Chinese languages, as well as English.
http://www.ul.cs.cmu.edu

University of Virginia Electronic Text Center has more than 10,000 publicly accessible texts in thirteen languages and over 164,000 publicly available image.
http://etext.lib.virginia.edu

Virtual Library A guide to selected resources across all the main academic areas. The original web directory of Tim Berners-Lee.
http://www.vlib.org/

World eBook Library Opportunities to read or download thousands of HTML books online. Provides free, unlimited public access to a comprehensive collection of public domain texts & references.
http://netlibrary.net/WorldHome.html