Compare files at a glance: VisualDiffer is an easy-to-use drag-and-drop tool that performs folder and file comparisons and displays the results in a two-pane window, with one file or folder on each side.
When comparing folders, the folder view works like a file manager, so it is possible to copy files, delete files, copy filenames to the clipboard and much more.
A set of different colors will clue you in to folders that are different: you can then expand folders to see which files are not the same.
