cPanel is the most widely used Control Panel tool on the hosting market. It's feature-rich and has an easy-to-use interface which will give you full control over your websites. You can easily manage files, e-mails and databases, take a look at usage statistics, install script-driven applications, etcetera. This software is preferred by many web hosting companies, as it also has a reseller counterpart named WebHost Manager (WHM). This instrument will supply you with a web-based graphical interface, through which you are able to handle a number of server-side settings, set up web hosting plans or new client accounts and adjust their features with only a few clicks. You can also install different modules and apps, update DNS records, brand all of the cPanel accounts that your clients will get, add and remove features from their Control Panels, and so on. cPanel and WHM are supported by nearly all billing applications out there, so this is among the top platforms when you want to become a reseller.