• E -books

• Internet Archive 

• Z library 

• Project Gutenberg

• The Complete Works of William Shakespeare

• PDF Drive 

• Bengali Books

•  LibriVox - Free Public Domain Audio Books 

• Directory of Open Access Books 

• Bibliomania: Free Online Literature and Study Guides

• Bookshelf at National Center for Biotechnoloy Information (NCBI)

• Children's Books Online: The Rosetta Project

• FreeBooks4Doctors: Free Medical Books Online

• Google Books

• Hypertexts

• International Children's Digital Library

• Internet Archive Text Archive

• Internet Modern History Sourcebook

• Making of America

• OAPEN (Open Access Publishing in European Networks)

• The Online Books Page

• Open eBooks

• Page by Page Books

• Read Print

• S.A.R.A.I. South Asia Resource Access on the Internet

• World Public Library

• Manybooks.net 

• Goodreads

• Digital Book Index 

• Freebook Sifter

• Hundred Zeros

• DigiLibraries

• Free-eBooks.net

• eReader IQ

• eReader Love

Religious E-books 

• Bible Gateway

• King James Bible Online

• Sacred Scripture

• The Vatican Archive

Books for the Visually Impaired 

• Bookshare