Kaedim - Use the Kaedim Platform to automatically transform your 2D art, sketches and photos in 3D.
JustSketchMe - Interactive 3d models for drawing reference
Spline - Design tool for 3d web experiences
Circuito.io - Instant code and wiring for your project
Vectary - Vectary is a free, online 3D modeling tool and sharing platform.
FineToon.net - Create caricatures of you and your friends