Blender - Blender is the open source, cross platform suite of tools for 3D creation.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
ZBrush - ZBrush is a digital sculpting and painting software solution.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
Ralpha Image Resizer - High-speed image batch conversion tool