DirEqual is a Folder Compare Tool that makes it extremely easy to compare local files and folders on your Mac.
DirEqual displays compared directories side by side as expandable trees, and the size and date are indicated for each item. Differences between the directories are indicated with colour and easy to identify icons.
To copy or delete files or folders, click an individual item to choose the appropriate action.
The action is represented with red and blue arrows. Then click the "Execute" button to synchronise the two folders.