NC Libraries & Learning Commons: OERs - per discipline
SOL*R – some B.C.-based projects and resources funded by BCcampus.
Orange Grove Text – Florida's operational repository project of open source educational materials.
The Assayer – largest catalog of open source textbooks and place to find free books about math, science, and computers.
Digital Textbook Initiative - California Learning Resource Network, Government Schwarzenegger
College Open Textbooks (US community college open textbook site) – lists open textbooks by subject, many of which have been peer reviewed.
Connexions – Content Commons of free, open-licensed educational materials in fields such as music, electrical engineering and psychology.
Wikibooks – Wikimedia community for creating and sharing educational textbooks.
Merlot - free and open resource designed primarily for higher education.
OER Commons – worldwide learning network of shared teaching and learning materials.
CCCOER – Community College Consortium for Open Educational Resources
FLOSS Manuals – free manuals for free software
Free Book Centre – a collection of free books on the web
Global Text – open content electronic textbooks
The Saylor Foundation – a free and open collection of college-level courses.
CK-12 Flexbooks (US repository of open access textbooks) – K-12 open textbooks and resources (incl. Math & Science)
Jorum – Open Educational Repository for higher education communities in the UK
Flatworldknowledge (US Open access college textbook publisher)
Curriki (US repository of open access educational materials, including textbooks)