Product Configuration OptionsCustomized products allow customers to choose from predetermined options, add upgrades and addons, set values like usernames, and more.
Cross-selling RecommendationsCross-selling allows you to display product recommendations to customers based on their existing services and the contents of their cart.
Product AddonsProduct addons let you offer additional items for sale alongside a specific parent product but bill for them on a separate billing cycle.
Product BundlesProduct bundles let you set up links to automatically add multiple products to the cart, with discounts for purchasing them together.
Product DownloadsProducts and product addons in WHMCS can include downloadable files that are available to customers immediately once the order is active.
Usage BillingUsage billing allows you to set up variable-priced items for products. The system then determines pricing based on actual usage data.