This client can be utilized as an adapter for using the Shopify API with the ZendFramework version 2. The client requires PHP 5.3 for use. This is a community maintained library authored by Matthew Peterson and open sourced on GitHub. The client is endorsed for use on the Shopify API developer documentation's list of 3rd party libraries.
Popular room rental service AirBNB does not yet have an official AirBNB API. But signs point to one's existence, as well as an affiliate plan in place to pay developers for reservations booked through the API. If the company sticks with the plan as written now, developers will be able to make up to 10 million API calls per day before contacting AirBNB.
CityDeals.com, local/national deal and discount finder, enables developers to access its deals database via the CityDeals API. Third party apps can feature daily deals and discounts, or provide a searchable interface of CityDeals.com's entire portfolio of discounts. CityDeals.com partners with retailers and service providers around the globe to provide an expansive offer of discounts applicable on a national scale or at the local level.
They say it’s the Age of the Consumer because people have more access to a lot of information about any given product they buy or vendor they do business with. But for all that information one thing most of us don’t have much control over is the rewards programs their credit cards generated points towards every time they buy something.