ClientExec is a great billing and support app, which is designed to help with the control over small and medium-sized hosting companies. It's the link between the front- and the back-end and it allows for some customer to buy a web hosting package on the web then to have their account activated. ClientExec will make it simple and easy for you to generate invoices, to put prices for hosting packages as well as domain names or to check out performance stats. If you use the app, you'll be able to add a payment processor, a domain registrar or an SSL provider in just a few simple actions. ClientExec also features a built-in ticketing system, that will enable you to provide support to your customers. If you decide to start your own reseller hosting business and other people to help you in this venture, you can give them different levels of access and each level will be able to access different sections and options in ClientExec.