nopCommerce is integrated with Facebook Shop. You can sell products directly on your Facebook page. Customers can browse your catalog and search for the right product right within Facebook and checkout quickly without leaving Facebook.
Facebook Shop works on mobile devices, and creates a Shop tab on your Facebook Page.
Please find more informartion about how to install plugins here.
The plugin is provided absolutely for free and includes source code. Find the project Github repository here.
UPDATE: nopCommerce team doesn't plan to upgrade this plugin to the latest version. Our community is more than welcome to continue development of the plugin. Please feel free to use our source code.