cPanel is the most widespread Control Panel instrument on the website hosting market. It is feature-rich and has an easy-to-use interface that will provide you with full control over your websites. It is easy to manage files, e-mails and databases, view usage statistics, install script-driven applications, etcetera. The software is preferred by many website hosting companies, since it also has a reseller counterpart named WebHost Manager (WHM). The aforementioned software tool will give you a web-based graphical interface, via which you're able to control a lot of server-side settings, set up hosting packages or new customer accounts and change their features with only a few clicks. You can also install different modules and apps, customize DNS records, brand 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 applications out there, so this is among the best platforms in case you wish to become a reseller.