Pierre Gougelet, the developer of XnSketch, XnRetro, XnBooth Pro, XnView Photo Fx Editor, XnShape for iOS photography has temporarily reduced the price to free for each, details below.
XN View Photo Fx Editor
Super fast editing of your images.
Turns your images into drawings, cartoons with one click.
Fast ‘vintage’ effects.
Quickly create photo booth transitions.
Wonderfully fast way to add abstract compositions.