The E-Gold payment gateway module is available in WHMCS.
The E-Path payment gateway module is available in WHMCS.
eProcessingNetwork is a credit card merchant gateway that uses the Authorize.net SIM Emulator integration.
eWAY lets WHMCS users to accept online credit card payments easily and securely.
The F2B payment gateway module is available in WHMCS.
Forte is a payment gateway module in WHMCS.
Gate2Shop is a payment gateway module in WHMCS.