Paint Shop Pro 7	http://www.jasc.com
SPAZZ 3D	http://www.strata.com
STRATA 3D	http://www.strata.com
GENESIS 3D	http://www.genesis3d.com
MORFIT  3D	http://www.3dstate.com
ZBrush	http://pixologic.com/
Rhinoceros 3D	http://www.rhino3d.com
Caligari Truespace	http://www.caligari.com
Poser by Curiouslabs	http://www.curiouslabs.com/
Terragen	http://www.planetside.co.uk/terragen/
Corel Bryce 5	http://www3.corel.com/