The Google Data Transfer Ruby SDK by Google provides the tools to have a Ruby command-line application that makes requests to the Data Transfer API. The Google Data Transfer API is a service for developers that assists with the management of transferring data from one user to another within a domain.
With huge budgets spent on marketing, it's probably a good idea to keep track of which marketing avenues are working and which aren't. Call Tracking Metrics is a simple telephone call tracking service that aims at helping users link incoming calls to specific marketing campaigns and in so doing, easily track and analyze the amount of calls received due to that particular campaign. The Call Tracking Metrics API provides access to this functionality.
Savvy shoppers know it often takes some looking around before you find the best price. It's the same with online shopping, but with so many retailers at your fingertips, where do you even begin? That's where a tool like Idealo is pretty helpful. It's an online price comparison service that lists over 300 000 products from over 14 000 retailers across the UK. The Idealo API allows e-commerce sellers to create and update product and price listings on the service.