The SkyBiometry C# SDK by SkyBiometry is available for download from the main site. With the SDK, developers can integrate recognition, identification, and verification features into web services compatible with .NET Framework 4.0+, Silverlight 4+, and Windows Phone 7.5+
Affectiva's emotional measurement API has been around for a couple of years now. Affectiva has seen adoption by marketers, publishers, gaming companies, and chat services. However, Affectiva believes it can greatly expand the use case scenarios by offering its service at no charge to startups.