CPanel offers you ability to control your mailboxes, sub-dommains, aliases, ftp, backups and many other aspects of your hosting account.
Your CPanel control panel display Data Transfer & Disk Space you're using on your domain name.
Using CPanel you can manage your mySQL Database, Website Statistics and your Web Files.
CPanel is very useful linux control panel. CPanel as a company has started development of similar control panel for windows environment.