Plumeria Image Sorter is a simple and flexible program that allows you to view your photographs and reorganise them in a simple and efficient way. It's key feature is that it allows you to configure a multitude of keys that can be used to organise your photos.
This practical utility allows you to see your photos quickly, move them to other folder, rename and erase therm in just a few key strokes. Plumeria Image Sorter is free, open source, and it does not require installation - you can simply decompress it and run ii from the EXE file. This means that it can also be used on a USB stick making it very portable too.
This application probably counts portability as its most useful feature added to the fact that you can throw away your mouse and use your keyboard to organise your photos instead.