Silverlight is a development platform for creating interactive applications for the web, desktop and mobile devices using .NET. It has been downloaded over 700 million times and has over 600,000 developers. Silverlight supports advanced features like HD video, content protection and offline functionality. The adoption rate has grown from 33% in summer 2009 to 60% in April 2010. It works across browsers on Windows, Mac and Linux and supports Windows Phone 7 development. Upcoming features include support for set top boxes and connected TVs.