"George Mason University Libraries offers a one-stop searchbox for Open and Affordable Educational Resources"
American Memory (Library of Congress) -- AMSER - Applied Math and Science Education Repository -- BC Campus:Open Ed -- College Open Textbooks -- Digital Public Library of America -- Directory of Open Access Books (DOAB) -- HathiTrust - Public Domain Texts -- Merlot.Org -- MIT OpenCourseware -- OAOpen.org -- OER Commons -- OERs at Internet Archive -- Open Textbook Library -- OpenStax CNX -- Project Gutenberg
"Openly Available Sources Integrated Search (OASIS) is a search tool that aims to make the discovery of open content easier. Some of the features of OASIS include the ability to limit search results by license, type, subject, source, and reviews available."
"The Teaching Commons brings together high-quality open educational resources from leading colleges and universities. Curated by librarians and their institutions, the Teaching Commons includes open access textbooks, course materials, lesson plans, multimedia, and more."
"A three-part training guide for bringing higher education instructors up to speed with Open Educational Resources (OER). This book was developed to serve as a standalone guide for independent creators and to support OER training through face-to-face, online, and hybrid delivery modes."