CAD Builder is described as 'For more than 20 years being always at the forefront of 3D, Open Cascade has gained considerable expertise in geometric modeling. In order to demonstrate software developing capabilities the company decided to come up with a sample of parametric CAD modeler — CAD Builder' and is a CAD software in the photos & graphics category. There are more than 10 alternatives to CAD Builder for a variety of platforms, including Windows, Mac, Web-based, Linux and Chrome OS apps. The best CAD Builder alternative is LibreCAD, which is both free and Open Source. Other great apps like CAD Builder are Autodesk AutoCAD, SOLIDWORKS, Microsoft 3D Builder and MakerSCAD.