3D-Tool is a versatile and universal tool for visualizing, analyzing and converting 2D/3D CAD model files, developed by 3D-Tool GmbH & Co. KG from Germany. It is capable of importing and reading all common 3D and 2D CAD data interchange formats and some native CAD file formats, and provides various operations for visualizing, analyzing, marking, and collaborating CAD projects. Thus, you can do in-depth analysis of assemblies or individual parts and develop solutions.