Artboard Studio - Online graphic design app mainly focused on product mockups.

Iceberger - Draw an iceberg and see how it will float

Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.

Stickman Builder - Free parametric graphic Stickman Builder, creates fascinating stick figures on the fly.

Snappa - The perfect graphic design tool for digital marketers.

Drawy - Learn to draw, use camera to score your drawings