Does anyone know if there's an easy way for a page in apache2 (dunno if it needs to be php, cgi or just plain htm) that can list all the directory and location entires on a virtual host?

So I'm playing with reverse proxying to make a portal for home.  I have all the reverse proxying working pretty well. 

Set up like below:

https://servername
      /webmin/server1 > redirects to https://server1:10000
      /webmin/server2 > redirects to https://server2:10000
      /usage                > redirects to https://server3/usage
      /gbpvr                > redirects to http://server4:7467/gbpvr

So that's all working well :D

But what I'd like to do is make a page as the https://servername level that will list all of those sub domains.

Any ideas?