webmin is a free control panel for linux servers. It is mainly used to manage linux servers. This is not a web hosting control panel.
http://www.webmin.com/deb.html
To install webmin on Debian/Ubuntu, first add webmain repo
vi /etc/apt/sources.list
Add
deb http://download.webmin.com/download/repository sarge contrib
Install webmin GPG Key
cd /root wget http://www.webmin.com/jcameron-key.asc apt-key add jcameron-key.asc
Now install webmin with
apt-get update apt-get -y install apt-transport-https webmin
Once installation finished, you will be able to login to webmin at
https://YOUR-SERVER-IP:10000/ User = root Password = Your root password