DOAB is a discovery service for peer reviewed open access books and book publishers that indexes and provides access to high quality, open access, peer-reviewed books.

Openly Available Sources Integrated Search (OASIS) is a search tool that aims to make the discovery of open content easier. OASIS currently searches open content from 115 different sources.

OER Commons offers a comprehensive infrastructure for curriculum experts and instructors at all levels to identify high-quality OER and collaborate around their adaptation, evaluation, and use to address the needs of teachers and learners.

Transform Higher Education and Student Learning: Open textbooks are licensed by authors and publishers to be freely used and adapted. Download, edit, and distribute them at no cost.

Openstax publishes high-quality, peer-reviewed, openly licensed college textbooks that are absolutely free online and low cost in print.

As part of Springer Nature, SpringerLink delivers fast access to the depth and breadth of our online collection of journals, eBooks, reference works and protocols across a vast range of subject disciplines.

Coursera is the global online learning platform that offers anyone, anywhere access to online courses and degrees from world-class universities and companies.

EdX is the online learning platform from world-leading digital education company 2U, Inc. EdX was founded by Harvard and MIT as an experiment to make the world’s best education available to everyone.

The MERLOT system provides access to curated online learning and support materials and content creation tools, led by an international community of educators, learners and researchers.

Since 2001, MIT OpenCourseWare has been creating new opportunities for millions of learners and educators, sharing Open Educational Resources (OER) from MIT and helping to lead a global revolution in free access to knowledge.

OER Commons offers a comprehensive infrastructure for curriculum experts and instructors at all levels to identify high-quality OER and collaborate around their adaptation, evaluation, and use to address the needs of teachers and learners.

The Open University has a radical and pioneering approach to access. Matching a refusal to place qualifications barriers in front of our own students, we also have a commitment to release and promote free learning content for others, for the benefit of the wider community. OpenLearn is a trailblazer for the provision of high quality open educational resources (OER) at scale and breadth, for free and accessible to all.

Saylor offers full courses online. Their texts and content may be useful in your own courses. This page showcases Saylor's economics pathway.