Bracketeer is a serious photo processing utility for serious photographers. It takes multiple exposures of a scene (bracketed exposures) and merges them together to form a uniformly lit image. It is similar to tonemapping with an HDR image, but there is no ghosting, and the result look much more natural.

For more information read the Bracketeer Instruction Manual here: http://www.pangeasoft.net/pano/bracketeer