cPanel is the most widely used Control Panel instrument on the web hosting market. It's feature-rich and it features an easy-to-use interface which will offer you full control of your websites. It is easy to control files, e-mails and databases, take a look at usage statistics, set up script-driven apps, and the like. The software is preferred by many website hosting companies, as it also has a reseller counterpart named WebHost Manager (WHM). This instrument will give you a web-based graphical interface, via which you're able to manage a lot of server-side settings, generate hosting packages or new customer accounts and adjust their features with just a few clicks. You can also install different modules and applications, update DNS records, brand the cPanel accounts that your customers will get, create and remove features from their Control Panels, etcetera. cPanel and WHM are compatible with nearly all billing applications out there, so this is among the best platforms in case you wish to become a reseller.