Quick search tool provides a single search of major OER repositories, including OpenStax, Open Library Textbook, and OER Commons.
Open Textbook Library - Includes 577 high quality books that are 66% reviewed that have open-licenses with more added weekly. Textbooks can usually be downloaded in PDF, EPUB and HTML formats. The Open Textbook Library is supported by the Center for Open Education and the Open Textbook Network.
OpenStax - Includes 40+ open textbooks that meet scope and sequence requirements for most courses. These are peer-reviewed texts written by professional content developers. Includes tens of thousands of "learning objects" called "pages" or modules.
MERLOT Open Textbook - Includes a curated collection of free and open online teaching, learning, and faculty developed resources, including web sources, PDF, videos, images, and much more..
OER Commons - Includes ten thousands of college level OER open textbooks from higher education institutions around the world.
Affordable Learning Solutions - Affordable Learning Solutions is a program of the California State University System partnering with higher education institutions, professional societies, and industry.
BCcampus OpenEd - provides a curated collection of open textbooks. Many of these textbooks have been reviewed and vetted by BC post-secondary faculty.
College Open Textbooks - Approximately 100+ peer-reviewed open textbooks collected. Includes a range of formats and copyright licenses are free for use.
Open SUNY Textbooks - An open textbook project of the State University of New York Libraries, funded by SUNY Innovative Instruction Technology grants.