Oculus Medium - Sculpt, model and paint in virtual reality on a 3D canvas.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Tilt Brush - Paint in spaces around you with Virtual Reality
Sculptris - Sculptris: Enter a world of digital art without barriers.
MasterpieceVR - Powerful VR sculpting & painting tool
ZBrush - ZBrush is a digital sculpting and painting software solution.