The following are some well-known collections of open textbooks.
In addition to textbooks, these repositories offer a wide variety of OER content, including videos, lessons, and other course materials.
The following sites provide completely open courses. Many include textbooks and supplemental learning materials together.
These repositories offer openly-licensed and public domain academic and classic works, though they are not textbooks.
We've identified select high-quality sources of open journal content.
You can also find open access journal articles in OneSearch. Look for articles with the orange "Open Access" label or use the "Open Access" filter to limit your results.