I recently came across another free software tool for CAD/3d design. The software is called CoCreate by PTC, which offers both a commercial and a free personal version. The interface looks pretty straight forward and the software on the whole reminds me of another tool in this category called Alibre Design. Both tools seems to take a similar approach, offering a free application to attract people into the 3d market, while maintaining a more traditional CAD-like approach. I find this approach to be less intuitive than other tools that do not follow so closely to the CAD tradition, such as Rhino, Form Z, and Google’s SketchUp, which is, technically, more of a visualization tool than a true modeling program.