FreeCAD is a parametric 3D modeler made primarily to design real-life objects of any size. Developed by Juergen Riegel, Werner Mayer
License: Open Source
Packly is tailored specifically for packaging design, offering ease of use and integration with design tools, while FreeCAD serves as a versatile open-source CAD program suitable for a wide range of engineering applications but may require more effort to master.