Kasemake - Kasemake is a packaging design software that is developed with industry-standard tools and Processing.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
SolidWorks Composer - Easily repurpose existing 3D models to rapidly create and update high-quality graphical assets that are fully associated with your 3D design.
FreeCAD - An open-source parametric 3D modeler
Impact CAD - Impact CAD is a packaging design CAD software that streamlines the product development process by enabling users to easily create realistic 3D product renderings and animations.
Sculptris - Sculptris: Enter a world of digital art without barriers.