With so many OER sites and sources available, it can be hard to know where to start. Fortunately, you can search multiple OER repositories at once with OASIS:
OASIS (Openly Available Sources Integrated Search) is a search tool created by SUNY Geneseo's Milne Library that aims to make the discovery of open content easier. It currently searches open content from 115 different sources and contains 455,492 records. On the search results page, use the filters on the left side of the page to limit results to those best suited to your needs.
The following are repositories from trusted OER publishers where you can find high-quality, reliable learning materials for your courses:
LibreTexts: A repository of open textbooks and open course shells. To browse the content, choose your desired field
Are you interested in finding an open educational resource (OER) for your class? An easy way to start is by clicking the link below and entering your current textbook ISBN to find similar items:
After searching for an ISBN, apply the following filters to the left of the results list:
You can also apply additional filters to narrow results to be more relevant to your specific course needs.