The Repustate C# SDK by Repustate is available for download from the official site. It provides API communication to implement sentiment analysis in social media with the aim to improve business reputation.
While social networking sites already help users maintain connections with friends and interest groups, a recent trend in web services has been the growth of semantic technologies that connect people across different websites. New York startup AdaptiveBlue offer a service called "Glue," which uses semantic web techniques to understand the content of popular web pages that describe lifestyle objects such as books, music, and movies. It then lets you do many useful, in-context things based on that data, such as learn more about the movie or actors on IMDB, buy the soundtrack on Amazon, read the historical background on Wikipedia, and a interact with a variety of other sites and services.
Snapchat, which recently surpassed Twitter in daily usage, has unveiled an API that allows advertisers to purchase Snapchat ads programmatically and at scale. Part of a broader launch of new ad offerings, Snapchat's Ads API could help the company grow its ad revenue and pave the way for an IPO.
Microsoft has announced its new Facebook SDK, which allows developers using Microsoft technologies to quickly create web client (via Silverlight), web server (via ASP.NET) and desktop (via WinForms and WPF) applications that harness the power of the Facebook API.