ZTreeWin - ZTreeWin is a fast and powerful text-mode file & directory manager, with many advanced features...
Delempty - Clean out empty files and folders
4dots Free PDF Password Remover - 4dots Free PDF Password Remover can remove a password from a PDF file.
Empty Folder Nuker - EmptyFolderNuker finds and deletes all empty folders starting from a base folder of your choice.
The Unarchiver - Get the top application for archives on Mac. It's a RAR extractor, it allows you to unzip files, and works with dozens of other formats.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC