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A Guide to Open Educational Resources (OER)


MOM iconMason OER Metafinder (MOM)
Advanced Search

The Mason OER Metafinder allows you to simultaneously search across the multiple OER repositories (e.g., MERLOT II,, OER Commons, OpenStax CNX, etc.) as well as many open archival repositories (e.g. HathiTrust, Internet Archive, Project Gutenberg, etc.).

Openly Available Sources Integrated Search (OASIS) is a search tool that aims to make the discovery of open content easier. OASIS currently searches open content from 52 different sources and contains 155,375 records. Great place to search when you know what type (audio, textbook, etc.) of material you are looking for.

OER Repositories

These OER repositories include textbooks, course materials, videos and more. They are some of the best places to start your search.


Open Courseware & Materials