Silverlight, Microsoft's alternative to Adobe Flash, has evolved to version 2 on Windows and Mac OS X, with Moonlight trailing behind for Linux. One thing to clarify up front is that independent of being 'officially supported,' Silverlight should generally run in all common browsers that support either the Netscape Plug-in API or ActiveX plug-ins, Joe Stegman revealed. As such, for Silverlight “supported browsers and platforms”, the Silverlight team works around plug-in API inconsistencies/bugs to ensure general Silverlight platform consistency (as well as does performance and stress testing on these browsers).

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