Commerce NAB Transact
Commerce NAB Transact is a payment gateway module for Drupal Commerce that currently allows you to process credit card payments on your site using NAB Transact's XML API payment service. In order to use this module, you must have an account with NAB Transact and confirm that you are enabled for XML API use.
The module is based on code from http://drupal.org/project/uc_nab_transact and http://drupal.org/project/commerce_authnet