Google Maps is a web mapping service application and technology provided by Google, that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit, and maps embedded on third-party websites via the Google Maps API. It offers street maps and a route planner for traveling by foot, car, bike (beta), or with public transportation. It also includes a locator for urban businesses in numerous countries around the world.
Facebook Graph API
The primary way for apps to read and write to the Facebook social graph. Using the Graph API you are able to post new stories, upload photos, retrieve posts and a variety of other tasks that an app might need to do. The Graph API is connected to some other Facebook APIs such as FQL.
Google Authentication (GA)
Third-party applications often require limited access to a user’s Google Account for certain types of activity. To ensure that user data is not abused, all requests for access must be approved by the account holder. Access control has two components, authentication and authorization. Authentication services allow users to sign in to your application using a Google Account. Authorization services let users provide your application with access to the data they have stored in Google applications. Google takes privacy seriously, and any application that requires access to a user’s data must be authorized by the user. Authentication and authorization services are often referred to collectively as auth.
The Google Chart API is a tool that lets web application developers create charts from some data and embed it in a web page. Many types of charts are supported, and by making the request into an image tag, people can simply include the chart in a web page.