Yes, I'm currently developing something similar to PV+, except it will actually work. It's a login system with username and password, stored in XML. You could also use SQL. It has the ability to add, delete, view, edit. It's based on levels, kind of like PV+. I will then edit the components to use this level, so then all you have to do is select the level you want and it will do the rest.
You can download what I have:
https://drive.google.com/file/d/0B-5kPtgWJjV9REIzdjU1dU45TEk/viewI'm not a .NET guy, so keep that in mind. It does work though. I think there is one user already created, it is jll/jll.
James