1)   ImageIron 2.0.0
Software for highly precise and automatic capture and removal of lens aberrations (distortion, vignetting) of consumer or high-end digital cameras

 2)   Vignetting Reducer 1.0
The word vignetting is used to indicate an unintended darkening of the image corners in a photographic image. Vignetting Reducer is a simple tool for reducing vignetting in digital photos.