The LinkedIn iOS SDK by LinkedIn gives developers the tools they need to integrate LinkedIn into their iOS applications. This SDK provides SSO authentication, deeper linking into member data, wrappers to make authenticated calls to LinkedIns APIs, and more.
Twitter, Facebook and LinkedIn have some new company. The Klout API is launching a new service to "sign in with Klout." Called KloutPass, it gives developers access to user influence data at the moment someone signs in. It also gives Klout the opportunity to be a stealthy player in the coming identity wars.
PeopleBrowsr is another “noise to signal” processor of the social media tidal wave. The Research.ly platform they provide is impressive and engaging. I had to pry myself away from it. It is a tool to answer the question, "who in this social media landscape is relevant on this topic?" but that is just the beginning. The PeopleBrowsr API is a pay to play way to gain social media intelligence.