These link to various repositories of open textbooks. Because they are repositories, you may encounter the same title in multiple places.
OERs encompass more than just textbooks; they also can be notes, test banks, activities, presentations, and more.
Includes more than 200,000 full-text ebooks from leading academic publishers. Watch a video on how to use this database.
The following tools search across various OER repositories.
Sometimes it's helpful to see how colleagues are using OER: