Someone in the comments mentioned silverlight having open specs & MS paying for a linux implementation. As always, there's a catch.<p><a href="http://en.wikipedia.org/wiki/Silverlight#Mono_Moonlight_implementation" rel="nofollow">http://en.wikipedia.org/wiki/Silverlight#Mono_Moonlight_impl...</a><p><a href="http://en.wikipedia.org/wiki/Moonlight_%28runtime%29#Microsoft_support" rel="nofollow">http://en.wikipedia.org/wiki/Moonlight_%28runtime%29#Microso...</a>