open source
Open source describes software whose underlying foundation (its source code) is available to the public. All users can view, alter, and redistribute open-source software so long as they abide the conditions set out by the license under which it is distributed. Popular open-source utilities include MySQL and WordPress.
order management system
With Yahoo! Merchant Solutions, you can use our order management system to process your orders online, which makes it easy to authorize, reauthorize, and settle shipped orders or process refunds. You can also quickly access one order, or a range of orders, and see detailed information about each order, including billing and address information, packing instructions, and order confirmations. Learn more.
order notifications
If you have a Merchant Solutions plan, you can choose to receive order notifications via email. Learn more about receiving orders.