Directory of Open Access Books
Currently provides access to over 91,000 open books in a variety of disciplines.
To download: Search for a book, select "Tools," click on "Any books," change it to "Free Google eBooks," select a title, click the gear icon , and download your preferred format. Books are in the public domain.
Open access books focused on the sciences.
Books focused on Health, Medicine, the Sciences, and Engineering. Free downloads available, but check the Request Rights and Permissions page for permissible uses.
National Center for Biotechnology Information (NCBI) Bookshelf
Books available on biology, biotechnology, and medicine topics. Can read as an EPub or download. Check copyright permissions per individual title.
Publishes books in the humanities and social sciences.
A free searchable catalog of books published on Pressbooks. Openly licensed material can be reused and revised on Pressbooks' publishing platform.
Over 75,000 public domain eBooks available to download.Can choose by subject or search for specific titles.
Texas A&M University Open Digital Publishing
A catalog of open books published by universities in the Texas A&M system