Microsoft Silverlight is a cross-browser, cross-platform, and cross-device plug-in for delivering the next generation of .NET based media experiences and rich interactive applications for the Web.
Short response: no it is not.
Extensive response: Silverlight could be a cross-browser, cross-platform and cross-device plugin, however it is only available for Window and Mac and not for any other platform. Therefore far from cross-platform. Also cross-browser is in my opinion highly overrated. It will work in most browsers, although I wonder if it works in iCab, Minimo or Omniweb.


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