The Google Custom Search .NET library by Google interacts with the search and customization functionalities of the API. It contains guides to setup with authentication and authorization, simple API example, web applications, and service accounts. Besides this .NET library can access custom search, additional APIs can be also supported with their respective documentation. A complete list: https://developers.google.com/api-client-library/dotnet/apis/
While Google leads the way in web search and Yahoo leads the way in answers, many upstart services are attempting to help you make decisions by giving you smarter answers to your questions. Microsoft has billed its new search offering Bing as both a "decision engine" and an "answer engine." Now there's Hunch, a new start-up founded by Flickr's Caterina Fake, which also aims to be a decision engine, but using a very different model. By first asking the user questions ranging from food preferences to pet peeves, Hunch tries to provide answers to questions that best match the user's interests based on crowdsourced data collected from other users.
Google has announced that availability of its Manufacturer Center service has been expanded to more countries and the company has launched the Google Manufacturer Center API. The API allows Manufacturer Center users to programmatically add, update, delete, and distribute product data.