Folder Compare allows a user complete control over the content of two similar folders. Unlike fully automated utilities, the user is able to choose what to do with the differences found in the folders. Fully scriptable and recordable, Folder Compare will permit any customization. For maximum compatibility, all file related operations are made using the MacOS Finder, from a user-customizable AppleScript.
Full Specifications
What's new in version 2.0.4
Corrected a problem introduced in 2.03.
Changed the limit in the "Recent Folders" popup to 20 entries insteadof 10.
Added Contextual Menus in the lists (Control-clickon the selected items).