- BCcampus OpenEd
Open textbook collection includes materials covering Arts, Business, Health, Recreation/Tourism, Sciences, Social Sciences, and Trades.
Offering openly licensed, high-quality, customizable digital courseware at a fraction of the cost of traditional textbooks, subject areas include Accounting, Algebra, Art History, Biology, Business, Calculus, Chemistry, Communications, Economics, Finance, Management, Marketing, Microbiology, Physics, Physiology, Political Science, Psychology, Sociology, Statistics, U.S. History, World History, and Writing.
- College Open Textbooks
Subject areas include Anthropology and Archeology, Biology & Genetics, Business, Chemistry, Computer Science, Economics, Education, Engineering & Electronics, English & Composition, Fine Arts, Health & Nursing, History, Languages and Communications, Law, Literature, Mathematics, Philosophy, Physics, Political Science, Psychology, Science, Sociology, and Statistics & Probability.
- Global Text Project
Content areas include Business, Computing, Education, Health, Science, and Social Science.
Offering over 2,500 open textbooks, content areas include Academic Support Services, Art, Business, Education, Humanities, Mathematics and Statistics, Science and Technology, and Social Sciences.
- Open SUNY (State University of New York)
Publishes high-quality, cost-effective course resources by engaging faculty as authors and peer-reviewers, and libraries as publishing service and infrastructure.
- OpenStax CNX (Connexions)
Available in two formats (modules, which are like small "knowledge chunks," and collections, which are groups of modules structured into books or course notes, or for other uses), content areas include Arts, Business, Humanities, Mathematics and Statistics, Science and Technology, and Social Sciences.
- OpenStax College
Offering more than 20 books for college courses, subjects include Math, Science, Social Studies, and Humanities.
- The Orange Grove (Florida's Open Educational Resource Repository)
Collections include Open Courseware, Open Textbooks, 3d object models, learning modules, and videos covering Business & Consumer Science; Communication & Information; Education; Engineering & Technology; Health Science; Humanities; Mathematics; Professional, Career & Technical; Science; Social Science; and Visual & Performing Arts.
- University of Minnesota (UMN) Open Textbook Library
Subject areas include Accounting & Finance; Business, Management & Marketing; Computer Science & Information Systems; Economics; Education; Engineering; Humanities & Languages; Journalism, Media Studies & Communications; Law; Mathematics & Statistics; Medicine; Natural & Physical Sciences; Social Sciences; and Student Success.