cPanel is the most widely used Control Panel tool on the website hosting market. It's feature-rich and it features an easy-to-use interface that will provide you with full control of your websites. It is easy to handle files, emails and databases, view usage statistics, install script-driven apps, etcetera. The software is preferred by many website hosting companies, since it also has a reseller counterpart named WebHost Manager (WHM). This instrument will provide you with a web-based graphical interface, via which you'll be able to manage a number of server-side settings, create hosting packages or new client accounts and change their features with just a few clicks. You may also install different modules and apps, customize DNS records, brand all of the cPanel accounts that your clients will get, add and remove features from their Control Panels, etcetera. cPanel and WHM are supported by the vast majority of billing apps out there, so this is among the best platforms if you would like to become a reseller.