Authorize.net

Integrated well with Nexternal
From Liner & Elsen Wine Merchants of Portland, Oregon on 11/20/2012.

The learning curve here was a bit steep, but our Nexternal rep and the Authorize phone support were great. We were set up by a third-party vendor (Chase) but would have preferred to deal directly with Authorize.net.

Oh, YA!
From Brad Burt of Santee, California on 6/18/2012.

You want to know about Authorize.net? It's wonderful. Get it set up and it just works great. The fees are fair and it seamlessly interacts with the Nexternal platform.

I really, really love it.

SUPER EASY AND QUICK
From Bob of Bremerton, Oregon on 6/15/2012.

We switch all our credit card processing to Authorize.net last year including purchases not processed through our Nexternal based web site and have found it to be easier and quicker with competitive rates. Would highly recommend checking this service out.

ProNetCycling.com