MedHunt
http://www.hon.ch/MedHunt
MedHunt uses both humans and web crawling to build its index of medical information. Searches can be narrowed by region, and a French interface is available.

Scirus
http://www.scirus.com
Motore medico dedicato con sistema di ricerca facilitato

OMNI
www.omni.ac.uk
 

Medical World Search
http://www.mwsearch.com/
Listings are created by spidering pages from a select group of medical sites, in order to keep results tightly focused.

9-11.com
http://www.9-11.com/ 
Directory and crawler-based medical search engine aimed at general consumers, as well as medical practitioners, and researchers

CiteLine.com
Provides a focused medical search. It uses a pre-screened index of medical sites.

Univers Santi
http://www.generique.net/pages/
Directory covering health and medicine aimed at medical professionals.

Echidna Medical Search
http://www.drsref.com.au/search/
Searches through Australian medical websites.

Medisearch
http://www.galenicom.com/
 UK medical Search Engine.

med411.com - medical portal and search engine
http://www.med411.com/

Medical World Search
http://www.mwsearch.com

Northern Light
http://www.northernlight.com/