Sponsored by the University of Minnesota's Center for Open Education, the Open Textbook Library contains complete, openly licensed, original textbooks in use at multiple higher education institutions or affiliated with a higher education institution, scholarly society or professional organization. Reviews available for most books.
BCcampus Open Education hosts and maintains the B.C. Open Textbook Collection which contains hundreds of high quality resources selected for post-secondary curricula in British Columbia and Canada.
Sponsored by Rice University, OpenStax is a collection of high-quality, peer-reviewed, openly licensed college textbooks.
Milne Library Publishing at SUNY Geneseo manages and maintains Milne Open Textbooks, a catalog of open textbooks authored and peer-reviewed by SUNY faculty and staff. Milne Open Textbooks began as the project Open SUNY Textbooks: an open access textbook publishing initiative established by State University of New York libraries and supported by SUNY Innovative Instruction Technology Grants. This pilot initiative published high-quality, cost-effective course resources by engaging faculty as authors and peer-reviewers, and libraries as publishing service and infrastructure.
The Open Textbook Initiative of the American Institute of Mathematics maintains a list of approved textbooks meeting evaluation criteria for use in traditional university courses.
Initiated at the University of California, Davis, he LibreTexts mission is to unite students, faculty and scholars in a cooperative effort to develop an easy-to-use online platform for the construction, customization, and dissemination of open educational resources (OER) to reduce the burdens of unreasonable textbook costs to our students and society.