Silverlight is a powerful development tool for creating engaging, interactive user experiences for Web and mobile applications. Silverlight is a free plug-in, powered by the .NET framework and compatible with multiple browsers, devices and operating systems, bringing a new level of interactivity wherever the Web works.

Silverlight 5 builds on the foundation of Silverlight 4 for building business applications and premium media experiences. Among other capabilities, the Silverlight 5 beta highlights dramatic video quality and performance improvements, and features that improve developer productivity.

Top Features List:

XAML Debugging with breakpoints for binding debugging
Implicit data templates for easy UI reuse
Double (and multi) click support
GPU-accelerated XNA-compatible 3D and immediate-mode 2D API
Low-latency sound effects and WAV support
Real operating system windows and multi-display support
Significant performance improvements, fixes and much more


https://www.silverlight.net/getstarte...rlight-5-beta/