WHMCS is an all-in-one client management, billing & support solution for online businesses. Handling everything from signup to termination, WHMCS is a powerful business automation tool that puts you firmly in control.
The WHMCS module has been developed by
ModulesGarden and is available free of charge.
Download Links
Installation Instructions
For information about installation please visit the ModulesGarden Wiki:
Servertastic for WHMCS