Bookboon.com contains free eBooks and textbooks that can be downloaded as a pdf, no registration needed. These books cannot be altered, but can be freely printed, shared, or embedded in non-commercial ways. They are intended only for individuals, colleges, and schools.

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.

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.

The "courseware modules" linked below represent substantial portions of the resources provided to students who register in participating Penn State classes. These resources are available for reuse by teachers and learners worldwide who do not intend to apply for admission, register for classes, or pursue a certificate or degree at Penn State.

UMass provides a variety of its courseware online for educators to use. These materials can be freely downloaded, shared, and altered. Credit must be given to the source, however, and works must be distributed noncommercially and under the same licensing as the original.

MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity.

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.

Open Learn is an initiative of The Open University, UK. It provides supplemental materials for educators, including articles, podcasts, videos, games, and much more. In addition, it offers more than 700 free online classes.