ClientExec is a well-known billing and support solution, which is used by a large number of web hosting companies as well as their resellers. It's feature-rich and customizable, and it will allow you to start and maintain your own reseller business without any problem. ClientExec will allow you to accept web-based payments through multiple payment processors or to offer domain registrations and SSL certificates through separate service providers, to put prices for web hosting plans and add-ons, to view detailed statistics about your customers along with the services they've bought, as well as monthly reports about how your company is doing. Furthermore, ClientExec contains an integrated ticket system, so you can provide support to all of your customers. Should you manage an actual company, you can give different stages of accessibility to your management crew, your customer support team, the sales team, etcetera, with different features they'll be able to access and to modify.