I think for one game server brought no TCAdmin. I use on my Server Webadmin and that is all ;D Webadmin is for free and easy to way ;D
Do you mean Webmin? (http://www.webmin.com/) If so, that's a web administration panel for Unix/Linux. What if he wants to host from Windows? Unless I am mistaken, TCAdmin usually runs on a separate server as a hub where game control panels are created. Then those panels communicate to virtual or dedicated servers where those games are actually hosted (usually virtual servers). This makes dynamic game server and game server control panel creation a breeze, once you have it set up. Set up is not for the inexperienced. I have only attempted it once, but I didn't have a whole lot of time to dedicate to it. It costs $15 (on the low end) per month to use TCAdmin.
If it is webmin you are talking about, that could work on a linux box, with some customization (simplification) of the web panel in webmin. I just hope that they don't start looking to use EasyAntiCheat as a cheat monitor. It's a good product for windows, but they don't support any other platform and have no plans to. It also won't run under Wine. But that's a different topic.