Microsoft has released Silverlight for the Symbian OS, which will allow your Silverlight applications to run in some selected Nokia handsets. Earlier, Silverlight was only available for web on desktop for Windows, Mac operating system. Later Moonlight came out, which is the linux version of Silverlight. Then Microsoft released Silverlight for Windows Phone 7 and this is the time for Symbian platform targeting mobile devices such as Nokia N97, N97 Mini XpressMusic etc.