Blender - Blender is the open source, cross platform suite of tools for 3D creation.
MagicaVoxel - A free lightweight GPU-based voxel art editor and interactive path tracing renderer.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Goxel - Goxel is a simple, but powerful voxel graphic editor with 24-bit color support, unlimited scene...
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
Cubik Studio - Model in a unique cubic style. Start modelization with boxes. Move, rotate and scale cuboids.