University of Washington
Pacific Northwest Regional Newspaper & Periodical Index
Covering newspapers, magazines, monographs, theses, dissertations and other material, this index goes back as far as the mid-nineteenth century. Very useful for locating primary source material on the Pacific Northwest region.
National Institutes of Health
Ncbi: Pub Med
This free index provides citations for biomedical articles from scholarly journals. For the actual article, library resources will have to be consulted.
Stanford University
High Wire Press Journals
Stanford University offers this database of articles from PubMed journals, as well as free full-text from 865 journals. One cool feature is the TopicMap, powered by Java, which allows you to view different aspects of topics. Good for...
Other
Directory of Open Access Journals
Over 400 scholarly journals are searchable for free at this database that is continually growing. Some of the subjects are pretty narrow, but good for finding that specific article on a special topic.
Other
Bayou State Periodical Index
Focused on periodicals pertaining to Louisiana, this online index covers even obscure publications such as alumni newsletters, and occasional offerings of non-profit organizations.