iScripts EasyBiller is an online billing and invoicing software for service businesses. Its powerful invoicing system allows you to send invoices to your clients by email or through the web interface. You can bill your clients on a recurring or one-time basis. Billing can be processed through Authorize.Net, YourPay, PayPal and Worldpay. As the source code is not encrypted, you can fully customize the look of your billing system to suit your requirements. You can also brand the entire website by setting your own logo, brand information, marketing messages, custom support links, etc. on the application interface. Since your web site will be hosted on your server, you have complete control over your customer data and how the site works.