cPanel is the most widespread Control Panel tool on the website hosting market. It's feature-rich and it comes with an easy-to-use interface which will offer you full control of your web sites. It is simple to handle files, email addresses and databases, view usage statistics, install script-driven apps, and many others. This software is preferred by many web hosting companies, due to the fact that it also has a reseller counterpart named WebHost Manager (WHM). This software tool will provide you with a web-based graphical interface, through which you'll be able to manage a lot of server-side settings, set up web hosting packages or new client accounts and adjust their features with only a couple of clicks. You can also install different modules and applications, update DNS records, brand all of the cPanel accounts that your clients will get, add and remove features from their Control Panels, etcetera. cPanel and WHM are compatible with almost all billing applications out there, so this is one of the top platforms if you wish to become a reseller.