Namecheap API registrar module for WHMCS can be downloaded here.
Namecheap.com WHMCS registrar plug-in is an open-source plug-in that is distributed free of charge. It focuses on integrating Namecheap as a domain registrar at WHMCS.We also have an SSL module for WHMCS. This module allows you to automate SSL Certificate sales with the Namecheap platform. Please click here for more information.
If you have any questions, feel free to contact our Support Team.