GIMP Plugin Registry

This Shadow&Highlight script does a decent job of lightening shadows and/or darken highlights in photographs. The UI gives you five control sliders. Two for control of the Shadow and Highlight amount (opacity), two for the tonal width of each contrast mask layer (using gamma), and one for the blur radius of the masks. Plus the option to flatten visible layers when done.  read more »

To reduce the effects of Purple Fringing or Chromatic Aberration in high contrast areas of an affected photograph.

Guide to Using the Purple Fringe Script

To fix areas produced by hot, dead or stuck pixels. (Includes procedures for noninteractive file and folder batch processing.)

Guide to Using the Hot Dot Script