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 97 different sources and contains 385,629 records. OASIS is being developed at SUNY Geneseo's Milne Library.
Milne Open Textbooks is an open access textbook publishing initiative established by State University of New York (SUNY) libraries. It contains a catalog of open textbooks authored and peer-reviewed by SUNY faculty and staff.
Funded by British Columbia's Ministry of Advanced Education, BCcampus OpenEd has a collection of 180 peer-reviewed open textbooks covering Sciences, Trades, Business & Management, Liberal Arts & Humanities, Social Sciences, Upgrading Programs, Health Related, and Recreation, Tourism, Hospitality & Service.
The Open Textbook Library has a collection of over 100 peer-reviewed and openly licensed titles in a wide range of disciplines. It is supported by the Open Textbook Network, a collaboration of library partners from colleges and universities across the country.
OpenStax is an open textbook publisher based at Rice University. Its collection mainly focuses on general education classes, and their textbooks are peer-reviewed. Additionally, they have at-cost print versions of their textbooks for sale.
Conveniently organized by format/type, CCCOER has listed resources into categories such as books, subject specific resources, open textbooks, open access journals, etc.
Created by Dr. Larry Green from Lake Tahoe Community College, this list is harvested from the Community College Consortium for Open Educational Resources (CCCOER) listserv conversations and a few other sources. It is a work in progress and grows as more suggestions come in.
Based out of UC Davis, LibreText is an "online platform for the construction, customization, and dissemination of open educational resources (OER)."
The MERLOT collection consists of tens of thousands of discipline-specific learning materials. All items have been contributed by the MERLOT member community, who have either authored the materials themselves, or who have discovered the materials, found them useful, and wished to share their enthusiasm for the materials with others in the teaching and learning community.
Additionally, you can find peer reviews from CCC, CSU and UC faculty on its associated site COOL4Ed.
OER Commons is a public digital library of open educational resources. Explore, create, and collaborate with educators around the world to improve curriculum.
Promotes textbook affordability for community college and university students, and facilitates widespread adoption of open, low-cost, high-quality materials.
SkillsCommons has a collection of open career and technical education materials. SkillsCommons’ mission is to accelerate the democratization of education for all through open educational services and resources enabling individuals, communities, educational institutions, organizations, and businesses to prepare people for successful employment in the 21st Century.
Using Google Advanced Search is a great way to find resources by license type. Here are directions on how to use Google Advanced Search to find materials with open licenses.
"Open Education Week: Finding Open Educational Resources" by David Wiley is licensed under CC BY 4.0