MasterpieceVR - Powerful VR sculpting & painting tool
VR Sketch - A tool for designers to draw inside virtual reality
Oculus Medium - Sculpt, model and paint in virtual reality on a 3D canvas.
Insite VR - The easiest way to view your 3D models in VR
A-Painter - Paint in VR in your Browser
Leap Motion Mobile Platform - Hand tracking for untethered, battery-powered VR/AR devices