Windows/Mac/Linux: Your camera defaults to giving your photos a numbered name, with a file date that can be changed. AmoK Exif Sorter sorts, names and moves your photos however you'd like—by focal length, date taken, aperture, width or other criteria.
In other words, it's a dream for both control freaks and highly organised photographers (who may be one and the same, but we digress). You can use AmoK's tool as an in-place renaming tool, or copy or move files into new folders with new names, sorting and other criteria. Need a folder with just your 3072-wide shots taken in January? That's the sort of thing AmoK excels at.
AmoK Exif Sorter is a free download for Windows, Mac and Linux systems. It's a Java-based tool, so you'll need Java installed to run it.