Free medical visualization software (Dicom-viewers)

radiantviewer.com
inobitec.ru
mrt3d.com
3dim-laboratory.cz
microdicom.com
multivox.ru
onis-viewer.com
santesoft.com
ircad.fr

Web-based DICOM viewers

lins.ru
demo.leadtools.com
ivmartel.github.io
softneta.com

Soft & web-services for scientific visualization

sci.utah.edu
voreen.org
volumerc.org

Volumetric datasets examples

osirix-viewer.com/datasets
volvis.org
dicomserver.co.uk
cs.fau.de
cg.tuwien.ac.at
digimorph.org