SpaceCAD 4.0.2.500 is a CAD Software product from spacecad.com, get 5 Stars SoftSea Rating, Building a flying model rocket is more than just putting together a couple of parts. You know that some rockets fly straight into the air, while others don't. The secret to a outstanding flight is the rocket's "stability" - your rocket has to be stable to make a outstanding flight. Predicting a rocket's stability is easy with SpaceCAD, because SpaceCAD takes care of all the rocket science and tells you immediately. And even better: you can optimize your rocket, so that it becomes stable if it isn't yet. Don't let your hard, hours-long worked-on rocket be lost in a couple of seconds - just because you didn't check its stability. SpaceCAD is the insurance for your rocket's safe flight! SpaceCAD makes it easy for you to design rockets. You can view them in 2D and 3D, you can zoom into your design and you can get see how your rocket will look like - before you even start building it. Just think of the hours won by tweaking your design to the max without sacrificing valuable material! The license of this design software is Demo, the price is $54.90, you can free download and get a free trial before you buy. If you want to get a full or nolimited version of SpaceCAD, you can buy this design software.