PHP Invoice - The easiest way to manage invoice, customer and product

PHP Invoice is a PHP/MySQL-based account and automated invoice management program. It supports automated billing through Paysystems, 2Checkout, Worldpay, Paypal, and custom payment gateway. Features: Customers can login and update their billing info & password, Ability to send out payment due notices to overdue accounts, Ability to add accounts manually, Supports for payments by credit cards & checks, Ability to activate, deactivate, email, or delete multiple accounts from one form, tax, pro-rated and many more