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