The Mason OER Metafinder searches across multiple different OER sources. Sources such as: OpenStax, OER Commons, MERLOT, HathiTrust, NYPL Digital Collections, and more!
OASIS is developed at SUNY Geneseo's Milne Library. OASIS searches open content from multiple different sources and contains thousands of records!
The MERLOT system provides access to curated online learning and support materials and content creation tools, led by an international community of educators, learners and researchers.
The Open Learning Initiative provides free learning materials about languages and STEM subjects.
"Open.Michigan is a University of Michigan initiative dedicated to creating and sharing knowledge resources and research created at U-M with the global learning community."