These search engines are a great place to start your OER search, especially if you're not tied to textbooks.
They search a variety of OER collections, databases, and repositories to make your search a bit easier.
Simultaneous search across 20 different sources of open educational materials. Created by George Mason University.
One-stop site for locating open textbooks.
Includes textbook reviews from faculty across the nation.
Open textbooks aimed towards large enrollment courses.
Free online texts and low cost print copies ordered online or through campus bookstores.
OER Commons community hub, where instructors can share ancillary resources.
Offers a collection of hundreds of open textbooks created in British Columbia.
OER curated by librarians throughout the US.
Thousands of free and openly licensed resources with 20 different material types.
Includes assignments, case studies, textbooks, quizzes, and more.