WHMCS

WHMCompleteSolution, also known as WHMCS, is a commercial billing and automation software program developed by WHMCS Ltd.

Originally, WHMCS was designed to integrate only with cPanel and WHM, a leading web hosting control panel. However, WHMCS has expanded to support additional integration with other web hosting control panels, and it now includes support for a wide range of control panels, payment gateways and other third party software.

WHMCS features automated signups for web hosting customers, automatic invoicing and payment processing in multiple currencies, account provisioning, domain registration and management, as well as a fully featured web ticketing and support system for end users.

As a commercial piece of billing and automation software, WHMCS is a firm favourite amongst the web hosting talk community due to its ease of use, customisability and frequent updates.

A demo of WHMCompleteSolution can be found on the WHMCS website at the demo page.