Solid file manager
This program is not revolutionary in any way, but, when we have in mind it is free, then we must say this is solid alternative to FreeCommander and other likewise programs.
Interface is organized in same way as it is in other programs of this purpose. Beside common tools, this program has tool for file splitting and joining, folders comparing, safely deleting, very powerful tool for multiple file renaming and so on. When we have file archiving in mind, most used compressors are implemented only in form of frontend, and you have to have extern applications to use it. Only ZIP will work without extern .exe file.