Bopalong is a file manipulation and listing program for the Mac. It allows you to rename batches of files, batch change various file properties, and generate file and folder listings. Bopalong:
Allows previews of any file changes before making them
Has simple wildcard renaming facilities
Can set file labels, comments, type and creator codes
Allows you to delete resource forks ( useful for web graphics )
Has flexible file selection facilities
Allows you to view or export file listings with selectable fields and separators
Features a folder size lister to help see where all that disk space is going
Can generate lists based on various search criteria