ClientExec is a popular billing and support solution, that's used by a number of web hosting companies as well as their resellers. It is feature-rich and customizable, therefore it will allow you to start and manage your own reseller business without any difficulty. ClientExec will allow you to accept web payments via multiple payment processors or to offer domain name registrations and SSL certificates through various suppliers, to put prices for website hosting plans and add-ons, to see detailed statistics about your customers and the services they've acquired, and also monthly reports on how your business is doing. Furthermore, ClientExec includes an integrated ticket system, therefore you'll be able to provide support to all of your clients. If you manage an actual company, you can give different stages of access to your management team, the support staff, the sales personnel, etc., with different functions they will be able to access and to change.