Legal Stuff:

LEGOŽ is a trademark of the LEGOŽ Group of companies which does not sponsor, authorize or endorse this software.

LeoCAD License: LeoCAD is distributed under the GNU General Public License (GPL)

Link: LeoCAD-0.77-5823-setup.exe - leocad - LeoCAD 0.77 for Windows - Virtual brick CAD software - Google Project Hosting

Model created in LeoCAD and rendered with 3DS Max by Bert Dol.

A quick look at the program in action: