cPanel is the most widespread Control Panel instrument on the website hosting market. It is feature-rich and it features an easy-to-use interface which will give you full control over your websites. It's easy to manage files, emails and databases, view usage statistics, set up script-driven applications, and the like. The software is preferred by many website hosting companies, because it also has a reseller counterpart named WebHost Manager (WHM). The aforementioned software instrument will provide you with a web-based graphical interface, via which you can manage a lot of server-side settings, set up web hosting plans or new customer accounts and modify their features with only a couple of clicks. You may also set up different modules and applications, change DNS records, brand all the cPanel accounts that your customers will get, create and remove features from their Control Panels, etc. cPanel and WHM are supported by nearly all billing apps out there, so this is among the best platforms when you wish to become a reseller.