+ Doc online
+ 30 days Trial
+ infinite demo (without save) but you can load any 3dm files!
+ French Version, UI
It's not free but you have the Infinite Demo (without save) and you can load any 3DM files!
So you can make a snapshoot screen (bouton "Printscreen")
and use it as you want as image in Octane (texture, background etc...!
Have fun Nurbs modeling and rendering and imaging!