DynaMed 
(Ebsco) - Best available evidence summaries for over 3000 topics.
Micromedex 2.0 
(Thomson Healthcare) Clinical information on toxicology, drugs, drug interactions, and reproductive risks
OCCAM 
Online Clinical Care Algorithms & Messages
UpToDate 
Mobile Resources
Free and UW-licensed apps for iPad/iPhone, Android, Blackberry, Windows devices