Milkshape
MilkShape 3D is a low-polygon modeler, which was initially designed for Half-Life. During the development, many file formats have been added. MilkShape 3D has all basic operations like select, move, rotate, scale, extrude, turn edge, subdivide, just to mention a few. MilkShape 3D also allows low-level editing with the vertex and face tool. Primitives like spheres, boxes and cylinders are also available.
Download (free to trial 25 $/€ to buy) >>
you also need Unimesh Plugin (in some versions is included)
Maya
Maya Maya Personal Learning Edition is a special version of Maya® software, which provides free access to Maya for non-commercial use. It gives 3D graphics and animation students, industry professionals, and those interested in breaking into the world of computer graphics (CG) an opportunity to explore all aspects of the award-winning Maya Complete software in a non-commercial capacity.
Download (free for not commercial use) >>
Blender
Blender is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback. Available for all major operating systems under the GNU General Public License.Download (free) >>
Bobcatben plugin for sims >>