Softaculous WHMCSWHMCS is an all-in-one client management, billing and support solution for online businesses. WHMCS handles everything from signup to termination, with automated billing, provisioning and management. With WHMCS, you're in control with a very powerful business automation tool.

You will need a License to install and run WHMCS.

http://www.whmcs.com/

Demo : https://www.softaculous.com/demos/WHMCS

Our Reseller hosting offers which includes cPanel/WHM, Softaculous, and you can install 
WHMCS in 2 clicks (WHMCS recommends to not have on same server WHMCS because it will not work well, then combine with a cpanel VPS your reseller plan !) Check our offers here :
https://www.yoorshop.fr/reseller-hosting-france.php