The Skype C# SDK by Sverrir Sigmundarson allows to communicate with the API. It includes SkypeNet.cs and SkypeNetClient.cs classes. Examples available at https://github.com/sverrirs/SkypeNet/tree/master/SkypeNet.App
You can now use the YouTube API to access and create captions for your videos. That means you could let your site visitors refine the transcript to videos you own, or create their own versions of the caption.
Are you a developer wishing you could insert Siri-like capabilities into your app? Wit is in the alpha phase but worth a close look. In the graphic below, and if you go to their website, y0u see how it translates language into meaning. Every example parses an intent. Examples are weather forecast (from the graphic), restaurant booking, get (something), heating control. There are an infinite number of intentions--because you can define them. Then it figures out subsequent pieces (the when and place in the example below. The Wit API returns Json and authenticates with OAuth2.