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.
Based in Vancouver, BC, Payfirma has created an XML-based API that promises custom forms and full shopping carts to keep you in control of developing the flow of your credit card processing. The idea is to make business's lives simpler by reducing development costs with the Payfirma API that accepts Visa, Mastercard, Discover, and American Express among others.
Eleven APIs have been added to the ProgrammableWeb directory in categories including Recreation, Location, and eCommerce. Highlights include an API that offers food substitutions, and API that reads license plates, and an API for Stackpile installation tool. Here's a rundown of the latest additions.
InviteBox, social referral program, allows merchants, bloggers, developers (and anybody else with a web presence) to refer friends and customers to recommended products. Users can take advantage of pre-determined referral offers (e.g. coupons, promo codes, free products, cash incentives, etc.) or create custom incentive programs. InviteBox offers all the needed moving parts from creating the referral program to implementation, and the analytics to measure success. Users can simply insert a widget into a website or utilize the Reward Callback API.