I think many photo managers have a feature like this.
Lightroom for instance has two modes to help you choose from a set of images; first there is survey, which shows you the selected images side by side as large as possible, and then you can remove the ones you do not like one by one. Once you have a small set of good images, you can switch to compare, which shows you two images side by side and lets you zoom to check out details and such. It works by having one image be the current pick, and then you can cycle the other image trough the remaining images, and if you find a better one, you select that as your pick instead.
I think Daminion, which has been discussed here before, also added some kind of compare view recently.