A lot of people use FolderSizes for its integrated search facility, which we’ve engineered from the ground up to be super-flexible. You can get answers to a vast number of data storage questions using FolderSizes search, and one of the most popular questions is – where are my empty folders?
Of course, with FolderSizes you can find empty folders not only on your local computer file system, but on any file system accessible to FolderSizes (including other machines accessible via your local area network, etc.).
For up-to-date info, please see how to search for empty directories with FolderSizes.