Moonlight is an open source implementation of Silverlight (http://silverlight.net), primarily for Linux and other Unix/X11 based operating systems.

Moonlight is an open source implementation of Silverlight (http://silverlight.net), primarily for Linux and other Unix/X11 based operating systems. - link

Moonlight 2 was released December 17, 2009
Не работает он.
все больше растет уверенность, что нет у него(Silverlight) будущего