MagicaVoxel - A free lightweight GPU-based voxel art editor and interactive path tracing renderer.
Voxel - Voxel is a mobile ad platform that enables users to experience mobile apps before purchasing or installing them.
World Machine - Command powerful tools like erosion and advanced colormaps to create terrain heightmaps, meshes, and textures for your game or 3D scene. Download for Free!
Goxel - Goxel is a simple, but powerful voxel graphic editor with 24-bit color support, unlimited scene...
Hexagon - Hexagon - Box Version
ZBrush - ZBrush is a digital sculpting and painting software solution.