I am starting a new web hosting service and I am looking for some pre-fabed control panel software to distribute to my users.

I want give my subsribers the web-based ability to change their email parameters, view site stats, modify password protected directories, see their disk quota, etc.

We use Linux 5.2 with Apache. All of the major web host providers have this functioanality. Did they all write the code from the ground up? There has got to be software the has been written in a general way to apply to a new server.

Any suggestions would be valued.