Yes. There is another shopping cart solution that works with QuickBooks, QuickBooks Point of sale and Now WordPress. This shopping cart solution has been in business since 1995. NetStores has A Word Press Plugin (release 1.1) that allows your WordPress Solution to integrate with a shopping cart solution that can be easily installed to any hosted WordPress website.
NetStores is also a IDN (Intuit Developer Network) Developer. NetStores also supports the QBMS Gateway.
All the features of the NetStores E-Commerce Solution are on the the site http://www.netstores.com/shopping-cart-feature-list.html,
You may see the Quick Start Guide for WordPress at:
Or Directly Download the Guide at:
You can also Read the Announcement at;