Bracketeer is a front-end GUI for Enfuse. Enfuse is a command-line freeware utility which uses multiple exposures of a scene (bracketed exposures) and merges them together to form a uniformly lit scene.

It is similar to tonemapping with an HDR image except that no HDR image is ever created, and there is no ghosting. It works with any kind of bracketed image set, not just panoramic equirectangular images.