Custom fields collect additional information from or about your clients. You can set them as admin-only or make them visible to clients.
Modules in WHMCS use templates to define what users see. You can customize these module templates using WHMCS's overrides system.
Order form templates define the look and feel of the shopping cart when your customers view products, register domains, and place orders.
You can easily modify WHMCS's default reports or create your own custom new reports in the /modules/reports/ directory.
You can add PHP code to your custom templates.
You can customize or extend MarketConnect promotions through template modifications and hooks.
Data feeds offer a dynamic way to extract data from WHMCS for use on the pages of your website.