cPanel is the most widespread Control Panel tool on the website hosting market. It's feature-rich and it features an easy-to-use interface that will provide you with full control over your sites. It is easy to take care of files, e-mails and databases, view usage statistics, install script-driven apps, and so on. This software is preferred by many web hosting companies, because it also has a reseller counterpart called WebHost Manager (WHM). This instrument will offer you a web-based graphical interface, through which you'll be able to handle lots of server-side settings, generate hosting plans or new customer accounts and adjust their features with only a few clicks. You can also install different modules and applications, adjust DNS records, brand all the cPanel accounts that your customers will get, add and remove features from their Control Panels, etcetera. cPanel and WHM are compatible with nearly all billing applications out there, so this is one of the best platforms in case you would like to become a reseller.