Could be anything really... like POVRay (ray tracer), 3D Studio Max, AutoCAD, Blender.... who knows?[DOUBLEPOST=1459517521][/DOUBLEPOST]I'm guessing it's http://graphics.stanford.edu/~cek/rayshade/rayshade.html because one of the other images in the website show some mac software with file title "RayShadeRoom" [DOUBLEPOST=1459517651][/DOUBLEPOST]Another pic shows "Virtual Decorator from www.developer3d.com"