Hyberbolic Software (http://www.hyperbolicsoftware.com) has released Tidy Up! 2.3.1, the latest version of their disk, file and folder processing utility for Mac OS X.
Tidy Up! can find duplicate files and packages using any criteria. Version 2.3.1 adds the ability to create six new smart baskets. The new option is accessible from the File menu and allows for the creation of the smart baskets using the selected folder and file as a filter. There are also bug fixes.
Tidy Up 2.3.1 requires Mac OS X 10.5 (“Leopard”) or higher. Upgrades from version 1.x are $20, and upgrades from version 2.x are free.