Microsoft Silverlight

Microsoft Silverlight is a web browser plugin for client side programmable vector graphics in Internet Explorer. Because of IE's dominant role in browsers, the absence of such capabilities was holding the field back; Silverlight modernizes Internet Explorer to a level similar to the other browsers which already supported javascript programmable vector graphics - such as Safari's Canvas and SVG in Firefox and Opera. Due to the similarities between Silverlight, Safari's Canvas and the W3C's SVG, frameworks like dojo can substitute one for the other based on browser - as long as javascript is used.