Poly/NURBS Editors

Hi,

I’m wondering what some of the most popular free Polygon or NURBS editors people use? I’ve seen a few not too bad poly editors, but can’t find any good free nurbs editors.

Lukasz.

What do u think abouts this :
http://mvc.man.ac.uk/research/nurbs/editor/
http://www.rhino3d.com/
http://www.freegraphics.com/05_Free_Graphics_Software/

In Google :
http://www.google.com/search?q=free+%2Bnurbs+%2Beditor&hl=fr&lr=