I think Power Tools is just like Fantastico for cPanel, it installs scripts very easily for your clients.
They only enter a little bit of information then Ensim will install the script for the users and they dont have to get into configuring any files, tables, databases etc.
Im not totally sure but almost

I dont use Ensim anymore so cant check it out myself.
If you dont know what Fantastico is, let me know and I will setup an account just so you can see what it is