Stacky

A WYSIWYG ( What you see is what you get) draw and animation tool. Very simple to use and with full control and clear boundaries. I use it for improving my drawing, for quick sketches, explanations and for fun!

It is based around the concept of the stack. It is just papers stacked on top of each other, but when the papers are transparent, then they are layers. If the papers are opaque then it are frames. And when they are semi-transparent it is union-skinning.

Animation exporting, drawing while playing and redo are not yet supported.