ClientExec is a popular billing and support solution, that's used by a number of hosting companies as well as their resellers. It's feature-rich and customizable, so it will allow you to create and maintain your own reseller company in no time. ClientExec will allow you to accept web-based payments through different payment processors or to offer domain registrations and SSL certificates via various providers, to set prices for hosting packages and add-ons, to see in-depth statistics about your clients and the services they've acquired, as well as monthly reports about how your business is doing. In addition, ClientExec includes an integrated ticket system, therefore you're able to provide support to all of your customers. If you run an actual company, you can give different degrees of accessibility to your management team, your support crew, your sales personnel, etc., with various features they will be able to access and to update.