Supported by the British Columbia Ministry of Advanced Education and the Hewlett Foundation, BCcampus OpenEd seeks to "make higher education more accessible by reducing student cost through the use of openly licensed textbooks."
The Global Text Project publishes, "open content electronic textbooks that are freely available" that "focus on content development and Web distribution".
MERLOT is "a curated collection of free and open online teaching, learning, and faculty development services contributed and used by an international education community."
OER Commons has a collection of resources and materials ranging from:
"Full university courses, interactive mini-lessons and simulations, adaptations of existing open work, open textbooks, K-12 Lesson Plans, worksheets, and activities"
OpenStax provides a space for authors to create, share, and adapt pages of educational material that are grouped into textbook-style digital books organized by discipline. The materials are then able to be viewed and shared by learners.
OpenSUNY Textbooks is " an open access textbook publishing initiative established by State University of New York libraries and supported by SUNY Innovative Instruction Technology Grants that "publishes high-quality, cost-effective course resources by engaging faculty as authors and peer-reviewers, and libraries as publishing service and infrastructure".
Project Gutenberg offers over 54,000 free eBooks, including an abundance of classic literature, especially digitized and proofread versions of older works for which copyright has expired.
A resource from OhioLINK, Affordable Learning Ohio includes resources designed to assist instructors at Ohio institutions in finding, adapting, and adopting low- or no-cost course materials and texts.
Coursera provides access to affordable courses, specialization programs, and accredited, online degrees. Coursera also provides professional development certification programs and skills-based training for businesses.
Lumen Learning provides educational materials such as videos, handouts, and PowerPoint presentations for educators to use in their classrooms. They also provide homework assignments and access to e-books for educators to use in their lesson plans.
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."
A collection of high quality, free-to-use courses that you can download and use for teaching. All content is stored in Google docs making it easy to access, browse and download.
A great source for free and open cultural and educational media on the Internet, Open Culture includes free online courses, audio books, textbooks, eBooks, language lessons, movies and more.
Saylor Academy is a nonprofit initiative working since 2008 to offer free and open online courses (nearly 100 full-length courses at the college and professional levels) to all who want to learn.