According to an article in The Lancet - 2007 369:464 following sites /softwares are recommended for Doctors. I think these are general utilities and thus should be helpful for all.
Yahoo Desktop Search
Foxit Reader
Cute PDF Writer
DeskPins
ScreenHunter Free
PDF Blender
FastStone Image Viewer
SyncBack
JustZipIt
YouSendIt
Yahoo Desktop Search
Foxit Reader
Cute PDF Writer
DeskPins
ScreenHunter Free
PDF Blender
FastStone Image Viewer
SyncBack
JustZipIt
YouSendIt