Photomizer 2 SE for Free (Windows)
Photomizer is a one-click photo optimizer that repairs your digital photo treasure without laborious training time and optimises fully automatically and reliably exactly those image parts, which disturb a photo’s overall impression. The program can produce excellent results, which even professional photographers could only obtain with extensive knowledge and experience, without the need to know anything about image editing. Simply load the photos you want to optimize and the program will automatically show you a side-by-side view of the original and the optimized version.
Wow, that's an annoying "registration" process. Anything that tries to open IE here gets a frowny face.