Let's talk about the best in the business:
The Adobe Suite, the set rocks. But a hefty price does it command.
CoralDraw suite too is pretty good.
Talking of the freeware, take a look at Photofiltre,[SIZE=-1] it's a complete image editing and effects package which is FREE!!! Almost Photoshop, without the layers concept. But there is a Photofiltre Studio software from the same person which includes layering concept.
Basic photo enhancing is easily achieved by the Picasa. It also finds/explores pictures within directories and can even make gift cds.
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GIMP gave problems like hanging, non-response and also is lesser user-friendly. So I sorta ruled it out.