Moonlight
Software
Moonlight is a discontinued free and open source implementation for Linux and other Unix-based operating systems of the Microsoft Silverlight application framework, developed and then abandoned by the Mono Project. Wikipedia
Initial release: March 4, 2009; 15 years ago
Preview release: 4.0 Preview 1 / 15 February 2011
Stable release: 3.99.0.3 / 27 April 2011