Might be worth downloading and installing and then to checkout out all the features of the ZPanel Project
version 2.5 beta 11:
It is also modular, meaning you can add modules created by developers to enhance the panel's features.
Support forums here:
I seem to remember in an older version I have somewhere that when you set up a new hosting account you can specify what quotas each client can use.
If not in the above version then the new version 3 below would be able to as displayed in the left panel of their demo.
At the same site above under the NEW - Blog
page you will see a new version 3 being actively developed called RapidCP
There is a demo version of it here:
I think I pointed out in your previous post that a hosting control panel would be a better choice to use for your hosting venture.
There may be other free panels out there that would require you to try and track them down via a Google search perhaps.
Take a look at the new DeskTopXampp
launch control posted by ridgewood
http://community.apachefriends.org/f/viewtopi ... 967#103967
launch control for XAMPP
is available here:
I highly recommend DTX.