Gateway
- http://gateway.nlm.nih.gov/
- The National Library of Medicine Gateway allows users to search in multiple retrieval systems at the U.S. National Library of Medicine.
Healia
- http://www.healia.com/
- Personalized consumer health search engine. Using specialized algorithms, it attempts to evaluate the quality of health-related content found on web pages.
MedHunt
- http://www.hon.ch/MedHunt/
- A tool from Health on the Net that searches the full text of 60,000 medical documents. Searches can be narrowed by location or type of source.
Medical World Search
- http://www.mwsearch.com/
- This tool has the ability to query other search engines, also provides a discussion forum, medical spelling and drug acronym devices. All users must register and pay annual membership fee.
SearchMedica
- http://www.searchmedica.com
- Search engine for medical professionals focusing on clinical research, Medline, evidence-based medicine and other professional medical content.