Oculus Medium - Sculpt, model and paint in virtual reality on a 3D canvas.
Sculptura - 3D sculpting for everyone
Tilt Brush - Paint in spaces around you with Virtual Reality
Nomad Sculpt - Nomad is a sculpting & painting mobile app, available on Android and iOS.
MasterpieceVR - Powerful VR sculpting & painting tool
PaintCube - Web-based 3D painting software