Blender - Blender is the open source, cross platform suite of tools for 3D creation.
MasterpieceVR - Powerful VR sculpting & painting tool
ZBrush - ZBrush is a digital sculpting and painting software solution.
Oculus Medium - Sculpt, model and paint in virtual reality on a 3D canvas.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
A-Painter - Paint in VR in your Browser