In order to facilitate faculty consideration of OER and the development of OER/ZTC degree pathways, the ASCCC OERI has worked with its Discipline Leads to provide curated lists of resources for California Community College faculty. The resources are organized by discipline and C-ID. See the current lists here: Open Educational Resources by Discipline.
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 114 different sources and contains over 440,000 records.
Open Textbook Library is a smaller library of open textbooks that meet certain criteria, including being in use at multiple higher education institutions, or affiliated with a higher education institution, scholarly society, or professional organization. Many of the included open textbooks have in-depth, public reviews by peers.
The Mason OER Metafinder launches a real-time, simultaneous search across 22 different sources of open educational materials as you hit the Search button. It includes results from repositories of older works in the public domain alongside OER.