Elavon Merchant Processing & Converge Payment Gateway Module
Elavon is one of the largest Merchant processors, and they also are a Costco Wholesale partner, and they offer really great rates on merchant processing with minimal transaction fees and no gateway fees and I am sure many members could save money using them. I would like to recommend and suggest that WHMCS create a module that works with Elavon's Merchant Processing & Payment Gateway which they call Converge. They used to allow users to use InternetSecure but have recently switched to requiring the Converge Payment Gateway (which they also own, I believe). I think many WHMCS users would benefit from having this option as a free supported module.
Here are some additional details: https://www.myvirtualmerchant.com/VirtualMerchant/compatiblecart.do
currently WHMCS is not a supported shopping cart but I am sure WHMCS could get some cross marketing opportunity by contacting them and being added to this list as well (once the module is created making it easy for users to integrate WHMCS with Converge). It's a win-win!