Gimp is like Photoshop but Free
GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring

Some of the stuff i made with Gimp:

God is Good

God is Good

I made this logo in to a animated .Gif image (I did not made this logo.)

Create a Non-Destructive Vignette Effect with The GIMP