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Getting Started with OERs

Find OERs

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.

Trusted OER Publishers

The following are repositories from trusted OER publishers where you can find high-quality, reliable learning materials for your courses: 

  • Open Textbook Library: An aggregator of primarily open textbook content. Search bibliographic information and reviews for open textbooks from a variety of sources.
  • Pressbooks Directory: Provides an index of thousands of open textbooks published across all Pressbooks networks
  • OER Commons: An aggregator of open materials, including fact sheets, graphics, syllabi, and a variety of other ancillaries, in addition to textbooks. Use narrowing options on the left side of their site to hone your search.
  • LibreTexts: A repository of open textbooks and open course shells. To browse the content, choose your desired field

  • JSTOR: Increasingly includes both open access and openly licensed articles, books, images, media, and research reports.
  • OpenStax: Peer-reviewed and openly licensed textbooks that can be read online or downloaded. Many include instructor resources, such as test banks, PowerPoint slides, and Canvas course content.

Search by ISBN

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:

 Textbook ISBN Search

After searching for an ISBN, apply the following filters to the left of the results list:

  • Under Other Filters, check the box next to Has No Cost.
  • Under Audience, check the box next to College General Ed, College Lower Division, College Upper Division, or Graduate School as appropriate.

You can also apply additional filters to narrow results to be more relevant to your specific course needs.