cPanel is the most popular Control Panel instrument on the hosting market. It's feature-rich and it has an easy-to-use interface which will supply you with full control of your sites. It's easy to handle files, e-mails and databases, take a look at usage statistics, install script-driven apps, etcetera. This software is preferred by many website hosting companies, because it also has a reseller counterpart called WebHost Manager (WHM). The aforementioned software instrument will offer you a web-based graphical interface, via which you are able to handle a number of server-side settings, set up website hosting packages or new client accounts and change their features with just a few clicks. You can also install different modules and apps, change DNS records, brand all the cPanel accounts that your customers will get, create 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 one of the best platforms when you would like to become a reseller.