Goxel - Goxel is a simple, but powerful voxel graphic editor with 24-bit color support, unlimited scene...
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Paint 3D - Paint 3D is a standalone graphic editing solution created by Microsoft.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Makers Empire 3D - Voxel editor made to be easy to use.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.