Mac OS Utilities
Twotade is a drag and drop app utility for setting the creation dates of files and folders to the modification date, and conversely.
Visit the website for more information and a demo.
Various options are available, such as only processing files, or only processing folders, or both.
How to use: Simply drag one or more folders on top of the Twotade application icon in the Finder, on the application window. Processing begins immediately.