The OneSpan eSignLive .NET SDK interacts with the API to integrate OneSpan Sign into a .NET application. OneSpan was formerly known as eSignLive and provides electronic signature services for businesses.
Yammer, a microblogging-for-business site and winner of the top prize at the recent TechCrunch50 conference, has released an API to allow developers to build their own applications around the service (Yammer API profile). Created by the people behind genealogy site Geni, Yammer has taken the tried and tested Twitter model, which asks users to answer the question "What are you doing?" in 140 characters or less, and adapted it for businesses, turning the question into "What are you working on?"
At the beginning of 2011 we reported that Collect had decided to drop it's API in order to change their offering to something more profitable. But now ReadWriteWeb have reported the disappointing demise of Collecta. This has the potential of being the first big failure of a well funded real-time web focused company, so questions need to be asked about why this happened and why Collecta weren't successful. Back in January of this year we asked "Is It Finally the End for Real-time Search Engines?" and it now looks like that very question is being raised again.