Ovid

Ovid is a bibliographic database containing scholarly articles from journals in fields including Health Sciences, Life Sciences, Multidisciplinary, Commerce, Education, Humanities, and Physical Sciences. Articles date from 1872. Currently the system contains over 1,200 journals, over 160 books and more than 300 databases

It is run by Ovid Technologies is an commercial operation. In 2001 they merged with Silverplatter. The company provides the tools tools and specialized services to browse, search, and retrieve information