GSU Library Research Guides: Finding Openly Accessible and Open Educational Resources: Open Textbook and Ancillary Collections (OER)

USG Catalog of Open Learning Materials

Try searching the University System of Georgia's catalog of open learning materials, Galileo:

Access OpenStax
OpenStax is an ever-growing library of open textbooks and ancillaries that are available for free online, are high-quality and peer-reviewed, and are openly licensed -- which means faculty can adopt or adapt them to their course needs.
California Community Colleges OER by Discipline
LibreTexts
LibreTexts is the adaptable, user-friendly non-profit open education resource platform that educators trust for creating, customizing, and sharing accessible, interactive textbooks, adaptive homework, and ancillary materials.
Milne Open Textbooks
A catalog of open textbooks that have been authored and peer-reviewed by SUNY faculty and staff.
Northwestern Selected Open Textbooks
A list of open textbooks by discipline.
Open Textbook Library
Open textbooks are licensed by authors and publishers to be freely used and adapted. Download, edit and distribute them at no cost.
Open Textbooks and Learning Materials for USG Core Curriculum Courses
Pressbooks OER
Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER).
Saskatchewan Open Educational Resources
Access free textbooks, manuals, videos/audio and other academic resources from Saskatchewan post-secondary institutions to support your education journey.

The Internet Archive
Internet Archive is a non-profit library of millions of free texts, movies, software, music, websites, and more.
The Library of Congress Digital Collections
LibriVox
Audiobooks in the public domain.
Public Domain Review