Where to find Open Books
OER has the most number of resources dedicated to General Ed courses, this is a list of the places where you can find complete textbooks that are free and open to use.
2012 Book Archive
Creative Commons-licensed copies of all the books which were available online from a specific publisher at the end of 2012.
American Institute of Mathematics
approved open textbooks.
Aviation Handbooks and Manuals Open Textbooks on Aviation from the Federal Aviation Administration (US).
BCCampus
OpenEd is
a collection of open textbooks aligned with the top 40 highest-enrolled subject areas,
trades, technology, and skills training.
Bookboon
Online textbooks for free.
Digital Collections Library of the Congress
FreeBooks4Doctors Free medical textbooks.
Google Books Some books presented in this mass conglomeration of scanned books are fully available, most are excerpted.
Highly Rated Textbooks
by Cool4Ed.
INTECH
Science, Technology & Medicine Open Access books.
Knowledge Unlatched
Free access to scholarly content.
Libretexts
Multi-institutional collaborative effort to improve education at all levels of higher learning by developing Open Access Resources.
Loyal Books
Free Public Domain Audiobooks and eBooks Downloads.
Lumen Learning
Boundless
Lyryx Open Textbooks Lyryx offers high-quality open textbooks in the fields of accounting, mathematics, and economics. They also have optional added (paid) resources such as homeworks and quizzes to accompany the open textbooks.
MUSE
in collaboration with Cornell University Press.
NOBA
teach and learn psychology for free.
OAPEN
freely accessible academic books, mainly in the area of humanities and social sciences.
Openhumanitiespress
International, scholar-led open access publishing collective.
Open SUNY Textbooks
State University of New York.
Open Culture
Stanford University.
Open Textbook Library
University of Minnesota.
Project Gutenberg mostly public domain books.
Textbook Revolution
a student-run site dedicated to increasing the use of free educational materials by teachers and professors.
The WAC Clearinghouse
Writing and Composition.
The Public Domain Review
focus on works which have now fallen into the public domain.
Writing Commons
Writing and Research.
