Explore more than 600 million creative works. An open source search engine for open content developed as part of the Wordpress project.
Before you click on the Advanced Search button make sure you click the dropdown for usage rights and select free to use or share.
Search open materials on Mason OER Metafinder (MOM) search engine. It simultaneously queries more than a dozen sources of educational materials.
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 117 different sources and contains 367,883 records.
A Creative Commons search engine devoted to open-license educational resources on the web. Use the site just as you would a typical search engine!
"Science.gov makes it possible for users to search over 60 databases, over 2,200 websites, and over 200 million pages of authoritative federal science information in many formats, including full-text documents, citations, scientific data supporting federally funded research, and multimedia."(as stated from the website)