Use small invoicing software for small businesses. Create and send professional-looking invoices and pay faster. Integration with PayPal will ensure that you have money in your account in some time. Keep track of the situation easily, because Aynax will notify you of that moment when your customer opens an invoice and watches it. Additional Products estimates, quotes, purchase orders, bids, content bills, inventory, receipts, accounts, business websites, credit notes, retainers and more.