Biology

Run through the University of Minnesota, Open Textbook Library aims to, "help instructors find affordable, quality textbook solutions. All textbooks in this library are complete and openly licensed."

The Digital Commons Network brings together free, full-text scholarly articles from hundreds of universities and colleges worldwide. Curated by university librarians and their supporting institutions, the Network includes a growing collection of peer-reviewed journal articles, book chapters, dissertations, working papers, conference proceedings, and other original scholarly work." (About, Digital Commons Network)

"PLOS (Public Library of Science) is a nonprofit publisher and advocacy organization founded to accelerate progress in science and medicine by leading a transformation in research communication."

The moving image collection on Internet Archive has thousands of videos from full length public domain movies, news, and television to video game speed runs.

"The OAPEN Library contains freely accessible academic books, mainly in the area of Humanities and Social Sciences."