Open Educational Resources (OER)

Many people's starting point for OER. Rice University's Connexions provides peer-reviewed open textbooks, but also has OER in many formats.

Very large repository of OER covering various subjects and education levels (undergraduate, secondary education, etc.).

Federated search engine that returns results from across 15 OER repositories.

A user-friendly OER search engine.

Searchable catalog of largely accessible and interactive OER books.

OER repository covering various subjects primarily at undergraduate level with some graduate level too.

OER from leading colleges and universities, curated by librarians and their institutions.

OER textbooks curated by the University of Minnesota.

OER repository covering various subjects and education levels (undergraduate, secondary education, etc.).