Openly Available Sources Integrated Search (OASIS)
Currently searches open content from 115 different sources. (See search widget code at https://oasis.geneseo.edu/about.php.)
Mason OER Metafinder (MOM)
Searches 22 sources, including HathiTrust, Internet Archive, OER Commons, Project Gutenberg, and the Digital Public Library of America
MERLOT SmartSearch
Once you do a search in MERLOT, select the Other Libraries tab and it will expand the search to more than 80 other sites and repositories. It also includes the option to filter by Creative Commons license. Not all MERLOT content is OER.
California Open Online Library for Education (COOL4Ed)’s ISBN search
Scroll down the Cool4Ed web page to find it. Input a commercial textbook’s ISBN into the search box. Results provide links to related open textbooks in MERLOT.
Openverse (formerly Creative Commons’ new CC Search for images)
Now includes free stock photos, images, and audio.
Creative Commons’ old CC Search
Google Advanced Search
See Usage Rights filter to filter by Creative Commons license.
Google Advanced Image Search
See Usage Rights filter to filter by all Creative Commons licenses.
For higher education
For vocational training
What are other college courses using?
For all ages
Subject-specific
