Community College Consortium for Open Education Resources
http://oerconsortium.org/discipline-specific/
College Open Textbooks
http://www.collegeopentextbooks.org/
Openstax College
http://openstaxcollege.org/books
Open Textbooks
http://www.collegeopentextbooks.org/opentextbookcontent/open-textbooks-by-subject
Merlot
http://taste.merlot.org/opentextbooks.html
Flat World Knowledge
http://www.flatworldknowledge.com/
Textbook Revolution
http://www.textbookrevolution.org/index.php/Main_Page
Boundless Textbooks
https://www.boundless.com/textbooks/
Open Education Resources
http://www.unesco.org/new/en/communication-and-information/access-to-knowledge/open-educational-resources/
Tools for Finding and Using Open Source
http://www.openeducationweek.org/category/blog/about-open-education/resources/tools-for-finding-and-using-oer/
Open Source and OER
http://learni.st/users/elke.lackner.3/boards/5986-open-courses-oer
http://oerconsortium.org/discipline-specific/
College Open Textbooks
http://www.collegeopentextbooks.org/
Openstax College
http://openstaxcollege.org/books
Open Textbooks
http://www.collegeopentextbooks.org/opentextbookcontent/open-textbooks-by-subject
Merlot
http://taste.merlot.org/opentextbooks.html
Flat World Knowledge
http://www.flatworldknowledge.com/
Textbook Revolution
http://www.textbookrevolution.org/index.php/Main_Page
Boundless Textbooks
https://www.boundless.com/textbooks/
Open Education Resources
http://www.unesco.org/new/en/communication-and-information/access-to-knowledge/open-educational-resources/
Tools for Finding and Using Open Source
http://www.openeducationweek.org/category/blog/about-open-education/resources/tools-for-finding-and-using-oer/
Open Source and OER
http://learni.st/users/elke.lackner.3/boards/5986-open-courses-oer