Google Contacts API gives client applications access to a user’s contacts list where the application can create new contacts, update or delete existing ones, or query for contacts that match particular criteria. This tutorial explains how to implement the API in C# and ASP.NET with OAuth 2.0.
Successful enterprises rely on the latest technology to drive business operations, intelligence, and efficiency. APIs are the driving force of business application development. In this article, we highlight twelve top business APIs, chosen by popularity from the visitors of ProgrammableWeb.