Remove Empty Directories (RED) shows the empty directories before deleting them, supports multiple delete modes (including Delete to recycle bin), allows white and black listing of directories by using filter lists and can detect directories with empty files as empty. It allows you to ignore certain directories and offers various other options. It also identifies Protected folders. RED lets you find and delete empty folders and directories right from the context menu itself. This is quite convenient in my opinion. You have to open its Settings and click the Integrate button to integrate the programs entry in to the explorer context menu.
Empty Folder Nuker is a portable app which finds and deletes all empty folders (with empty sub-folders) starting from a base folder of your choice. It allows you to delete the files to the Recycle Bin where available. A plus here is that it allows Shell integration, thereby letting you right-click on any folder in Windows Explorer and find empty folders within it.
FMS Empty Folder Remover is another freeware tool which is a useful application that will enable you to easily get rid of unwanted directories. This lightweight tool scans a source folder and instantly identifies the empty directories within.
Fast Empty Folder Finder finds empty folders quickly, shows you a preview of its contents, and gives you the option to delete those folders to the Recycle Bin or directly.