Silverlight

Microsoft Silverlight is a cross-browser, cross-platform implementation of the .NET Framework for building media experiences and rich interactive applications for the web, the desktop, and the Windows Phone.

-MSDN

Controversy:

Silverlight, DOA

Microsoft's head of servers and tools division, Bob Muglia’s statement that Microsoft has shifted strategy towards Silverlight and they are emphasizing on HTML5 as only true cross platform solution.

This made the developer around the world very disappointed feeling they have wasted their time and money on the Silverlight as next generation web platform solution.