Apache Admin Panel for Auth Control?

Question

I'm in the process of launching a client tool that stores information on an apache server. I want to be able to control access to the files after they've been created. The basic Apache Auth module seems to meet my requirements, my only concern is that the permissions must be maintained by a non-technical user.

Does anyone have a recommendation for a Admin Tool that will allow an admin to easily grant authorization to users, as well as reset passwords and manage a few separate realms?

Thanks! Mike