OpenDOAR is the quality-assured, global Directory of Open Access Repositories. You can search and browse through thousands of registered repositories based on a range of features, such as location, software or type of material held. Try it out for yourself:
The Multimedia Educational Resource for Online Teaching (MERLOT), developed by the California State University Center for Distributed Learning offers access to thousands of open educational materials. The search function even allows you to enter an ISBN number of a current textbook to find a comparable open textbook.
Openly Available Sources Integrated Search (OASIS) is a search tool developed by SUNY Geneseo, in consultation with Alexis Clifton, SUNY OER Services Executive Director, that aims to make the discovery of open content easier. OASIS currently searches open content from 73 different sources and contains 171,998 records.
