This is a very good freeware from FastStone Soft. It's image viewer program. Eventhough it's free, it support many major image file format. You can color adjust, crop, resize, view your image. It comes with many good features. Not only what I mentioned just now.
You can also use it to view your images as a musical slide show with more than 150 special transitional effects.
Try it now and get amazed with its features.
FastStone Image Viewer 3.5 ---> click to download