MERLOT II is a program of the California State University, in partnership with educational institutions, professional societies, and industries to provide a database of more than 40,000 materials related to a wide variety of subjects. These materials come in a variety of formats, including animations and simulations, assignments and quizzes/tests, case studies and reference materials, and open textbooks, journals, and articles.

InTech publishes more than 2,300 open textbooks and 6 journals in a variety of subjects that fall under the heading of science, technology, and medicine.

Hippocampus offers educators a wide variety of multimedia content online, including videos, animations, and simulations. An additional feature offers educators the ability to create "playlists" for their students, which correlate specifically to their particular instruction material.