ClientExec is a great billing and support app, that is intended to facilitate the control over small and medium-sized hosting service providers. It's the connection between the front- and the back-end and it makes it possible for a customer to purchase a hosting plan on the Internet and then to get their account activated. ClientExec will make it a breeze for you to generate invoices, to put prices for website hosting packages and domains or to watch performance statistics. If you use the app, you can add a payment processor, a domain registrar or an SSL provider in just a few simple actions. ClientExec also includes a built-in ticketing system, that will allow you to provide support to your customers. If you decide to start your own reseller website hosting business and other people to help you in this venture, you can give them separate levels of access and each level will be able to access different sections and options in ClientExec.