Electronic online shopping carts to facilitate online shopping; Application service provider featuring an application programming interface (API) for online retailers to monitor customer product viewing, additions of products to electronic online shopping carts, and product purchases and thereafter recommending similar products, recommending coordinating products, recommending higher cost products, providing discount options to the customer, and incentivizing increased customer purchases with tiered gifting; Designing webpages to maintain consistency across an online platforms of a retailer; Application service provider featuring an API for retailers to recommended to customers best selling products, new products, products related to recent customer viewing and purchasing trends, and re-displaying products recently viewed by the customer. Application service provider featuring an API for offering goods after checkout to be added to the checkout; Application service provider featuring an API utilizing a countdown timer to incentivize increased purchases; Application service provider linking e-commerce websites to credit card processing networks