We have created a Magento extension for our invoicing app http://www.invoicera.com and I am looking forward for some Magento professional/ Store Owners who can review our extension and can share their feedback. Our extension is helpful to store owners as they would be able to send professional invoices to their customers for their orders in real time. You may find our extension at http://www.magentocommerce.com/mage...on/7299/invoicera_order_and_invoice_connector