FilerFrog makes it easier to manipulate files in windows explorer.
It integrates with windows explorer as a shell extension so it can provide you with tools to perform your every day file manipulation actions easily and efficiently.
FilerFrog was formerly a commercial product and it's now a free Open Source software.
Windows PowerShell, formerly code-named Monad, is an interactive command-line and task-based scripting technology that enables administrators to more efficiently automate and control system management tasks.
Hotwire is an object-oriented hypershell. It is a shell designed for systems programming (files, processes), and thus it is in the same conceptual category of software as the Unix shell+terminal and Windows PowerShell.