MasterpieceVR - Powerful VR sculpting & painting tool
Oculus Medium - Sculpt, model and paint in virtual reality on a 3D canvas.
VR Sketch - A tool for designers to draw inside virtual reality
Tilt Brush - Paint in spaces around you with Virtual Reality
Insite VR - The easiest way to view your 3D models in VR
A-Painter - Paint in VR in your Browser