There are numerous websites, repositories, and metasearch interfaces to help you locate OER beyond the few examples listed on the main page of this guide. Use the tabs on the left to browse OER and OA sources by discipline.
Appreciation to Ciara Hensley (UCF Adjunct Librarian, Spring 2018) for locating various open text collections and identifying which collections are likely sources for specific disciplines. The lists continue to be updated by current UCF Librarians.