LibGuides CMS: Database Lists: O

OAIster This link opens in a new window
OAIster is a union catalog of millions of records representing open access resources that was built by harvesting from open access collections worldwide. OAIster includes more than 30 million records representing digital resources from more than 1,500 contributors.

Open Culture
A smaller collection of free ebooks, as well as links to free courses, movies, language lessons, and more.

OpenDOAR This link opens in a new window
OpenDOAR is an authoritative directory of academic open access repositories. Each OpenDOAR repository has been visited by project staff to check the information that is recorded here.
Opposing Viewpoints : In Context This link opens in a new window
Find overviews, news, and opinions on hundreds of today's important social issues. Includes some peer-reviewed content.