All kinds of media and genres can be OERs, including books, articles, videos, software, syllabi, educational kits, and more. This page has links to specific OER repositories and OER search tools, which may include different material types. Textbooks are the most popular OERs, and they have a separate textbooks page here.
OERs are most often give flexible copyright licenses, like Creative Commons or Public Domain, to remove restrictions on their use and discrimination. For more information on Creative Commons copyrights and what they mean, visit the Creative Commons page on our Copyright guide.