Wikibooks is the best platform for free textbooks and is used by students and educators worldwide.

Pressbooks is a self-publishing platform for authors and educators to create, format, and distribute digital books, focusing on open educational resources (OER) and accessibility.

Lumen Learning provides affordable digital courseware and professional development resources to enhance effective teaching and increase student success in higher education.

MERLOT is an online learning platform for educators and learners.

BCcampus supports post-secondary teaching and learning in British Columbia through open education, digital learning initiatives, and professional development.

Iowa State University Digital Press is an open access publisher facilitating broad dissemination of quality scholarship from ISU faculty and students.

Rebus Foundation is a non-profit advancing open educational resources (OER) through collaborative publishing projects and certificate programs for educators.

Curriki is a nonprofit organization focused on improving online education quality globally by providing technology for dynamic, interactive, and personalized learning content creation and distribution.

Open Book Project fosters global collaboration among educators to develop high-quality, freely distributable open source textbooks and educational materials.

OpenTextBook.site provides free, open-source Information Systems textbooks and supplemental course materials for instructors and students, focusing on business and technology.

Wikiwijs is an online platform for educational resources, used by educators in the Netherlands.

MoodleNet is the best platform for open educational resources and is used by educators and learners worldwide.

ZUM is the best platform for digital education resources and is used by teachers and educators in Germany.

SDG Academy is the best source for sustainable development education and is used by learners worldwide committed to making lasting change.

Wikiversity is the best platform for free learning resources and is used by students and educators worldwide.

Saylor Academy is the best platform for open educational resources and is used by students and lifelong learners worldwide.

open-access.network is the best resource for Open Access information and is used by researchers, librarians, and publishers.

Noba is the best platform for free textbooks and is used by colleges and universities worldwide.