Find Open Textbooks Related to a Book Enter textbook ISBN to get OER options from MERLOT collections. Site includes links to major OER sources. From California State Universities.
Saylor Guides by Subject: OER guides by subject/class created for instructors building open courses.
Complete Textbooks
Open Textbook Library: Hundreds of complete, open college-level textbooks. Many include peer-reviews.
Open Stax: Rice Connexions is providing peer reviewed, quality open textbooks.
Complete Courses
Saylor.org: Offers full courses online. Though they charge students to enroll, they have composed their courses using mostly open materials that can be copied, adapted, etc.
Open Course Library: This WA project offers 81 of Washington's most enrolled courses. There are a lot of great readings in these course files. Great community college content.
Large Repositories
OER Commons: Offers a variety of OER at a variety of levels and subjects. Use limiters on left side of results page.
OASIS: Openly Available Sources Integrated Search: A Freely available web-based OER Seach Tool that searches 100 reputable sources of open content
MERLOT: One of the biggest OER repositories, but a bit unwieldy and difficult to search. Use limiting options on the left side of results page.
Dig deeper using the OER Big List