Realize that this is a commercial (not open source) however we have completed and added ERPnext to our integration wizard. If ERPnext developers are interested you can add ERPnext now via our wizard and connect to multiple applications including quickbooks, xero, woocommerce, magento, bigcommerce, sap, revel, ncr silver, vend, unleashed, mailchimp and more. It is not an opensource product.