Doodly - Create your own doodle video in just 60 seconds
Snap Art - Snap's augmented reality platform
Drawtoimg - Turn your drawing into a drag-and-drop image in no time.
Low Poly Art - World's largest free collection of low polygon backgrounds
Da Vinci Eye - Learn to draw by using your phone to overlay images for you to trace
SketchDaily.io - Free educational tool for improving your sketching skills.