I was browsing around at the Gimp plugin registry and found something very interesting: a color correction plugin for the Gimp.

In fiddling with it, I can see that this can actually be useful, as many of the color-correcting features are located all in one plugin, and this makes it easier (and higher quality) than bouncing back-and-forth between the curves, levels, hsv, and other dialogs. Its features include instant updating of the image, a nice visualization scope, and it even “integrates” with the color dropper, and will allow you to select the pure white and pure black in the image.

If you’re using Gimp 1.2.x or even 1.3.x , you should definately check it out.