Hi,
I am searching for a hosting panel to manage no more than 20 domains, but I want to have the websites hosted on Apache running on Windows 2008 server.

I have found Plesk that supports this, but they offer an unlimited domain license for 1400$, that I found very expensive for my needs.

Do you now any other control panel for Windows + Apache as a web server?

Hi,
I have found Plesk that supports this, but they offer an unlimited domain license for 1400$, that I found very expensive for my needs.

We too looked for a CPanel like product a number of years ago when we began using Apache/Windows and eventually ended up developing our systems. While Apache and Windows play very nice together it does take more effort and care to get the two working in harmony, and thus the majority opinion is to steer towards Linux/Apache.

Unfortunately I think you'll find that even Plesk does not support WAMP (Windows/Apache/MySQL/PHP) as the actual front end environment, and merely that Plesk runs itself under Apache on a non-standard port.

There are some PHP based control panels out there that you could take on board and modify to suit your needs but you will need to take care of the direct calls to the command shell yourself. For instance http://www.web-cp.net/ is one such PHP based control panel - although I would stress again you would need to do some work on it before releasing it to your customers.