The official Google Shopping Content PHP SDK in beta stage provides access to the API possibilities to list ads, drive traffic, and increase sales. Resources include Api Key authentication and OAuth 2.0 authorization. Examples demonstrate how to build the client object, build the service object, call the API, and handle the result.
Printful, a drop shipping service for custom print products and a product of the same team who created Startup Vitamins and BeHappy.me, has provided the Printful API that will allow people to easily integrate the functionality with their websites and applications. The service is specifically aimed at small and medium websites that want to offer print products, but don't want to handle the fulfillment and shipping of those products.
OpenJaw Technologies, a leading online technology partner for the world's biggest travel brands, has launched the OpenJaw Tribe Developer Community which provides developers access to the OpenJaw t-Retail Platform as well as to a variety of tools and resources that help simplify the integration of the platform into third-party applications.