NetBilling

http://www.netbilling.com/
  1. NETBilling Direct Mode API Payment Module for Magento

    $167.00

    You must have an API account with NETBilling. This uses Direct Mode 3.1 Protocol of NETBilling. Learn More
  2. OpenCart NetBilling Payment Module

    $27.00
    NetBilling Direct Mode API 3.1 payment module for OpenCart Learn More