skribbl - Word guessing based on drawing.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
LetsDraw.It - Guess and Draw, Drawing Battle, Pictionary, Copy picture - online drawing games where you can compare your skill with others.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
gartic.io - Draw, guess, and win!
ZBrush - ZBrush is a digital sculpting and painting software solution.