There is a free program from Google called Picasa. (When you go to load it, it will ask you if you want to load several other programs. You don`t have to.) Like the others say Photo Shop may be the best but not cheap. I have had good luck with my Nikon program that came with my camera. It may be a free download from Nikon now ???? The auto color balance does a nice job. Sometimes it`s just learning the program and playing with the Hues, brightness, and sharpness. I haven`t seen an actual underwater program.