GIMP- GNU Image Manipulation Program

The GIMP image editing software can be used for photo retouching, image composition and image authoring.

GIMP website

About GIMP: The GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software that can be used as a simple paint program, an expert photo retouching program, an image format converter, as well as a range of batch processing and rendering operations.

Runs on:  UNIX, MS Windows and Mac OS X.

Download: http://www.gimp.org

 

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