Best Substitute of cpanel/whm . No doubt cpanel is the best control panel for web server. But it is costly. It cost you $12-15 for vps and $25-35 for Dedicated server. If you want to save your money You have to do everthing manually. Which become very complicated.
You can use Zpanel. It is the best substitute of cpanel /whm. You can check demo of Zpanel here.
Demo Link : http://us.zpanel.tk/
You can check here how it work. It has not all feature of cpanel but it is enough to maintain simple web server.
Zpanel don’t have file Manager. For file management you have to use FTP Client. You can use filezilla .
One of advantage is that you can install zpanel on any OS where you can use Cpanel on Centos only.
Zpanel forum has very active member so if you have any issue you can get support very fast.