Why should I use Silverlight

Silverlight empowers developers with great new GUI capabilities, combined with revolutionary GUI coding concepts that came to Silverlight from WPF. While some think that HTML 5 gives the developers functionality that is almost as powerful as Silverlight, the programming model of HTML 5 is indisputably old, while the Silverlight/WPF programming model is ahead of that of any competing software.

Unlike the currently available versions of HTML, Silverlight is 98 percent multi-platform (between Windows and Macs) and its list of non multi-platform features is freely available. As long as you avoid using those features, any application you build for Windows is guaranteed to run on Mac.

Silverlight is close to being 100 percent multi-browser (if there are any features that do not perform the same on different browsers, I am not aware of them) and any application you write using Internet Explorer is guaranteed to run within Firefox on the same platform, while this might not be the case with HTML.

Silverlight has a very small footprint – in order to make Silverlight 5 run on your machine you need to download and install only a 6 MB package.

Silverlight makes it very easy to deploy your application via the Internet, whether it is a browser-based application or not.

Microsoft Phone uses Silverlight as its primary coding platform.