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.
OpenStax A growing collection of professional quality, peer-reviewed, openly licensed, editable intro-level textbooks.
Milne Open Textbooks Milne Library Publishing at SUNY Geneseo manages and maintains Milne Open Textbooks, a catalog of open textbooks authored and peer-reviewed by faculty and staff of the State University of New York libraries.