Microsoft Silverlight is a programmable web browser plugin that enables features such as animation, vector graphics and audio-video playback that characterizes rich Internet applications. Version 2.0, released in October 2008, brought additional interactivity features and support for .NET languages and development tools. Microsoft made the beta of Silverlight 3.0 available on March 18, 2009.
It is similar to
# Adobe Flash Player
# Adobe AIR
# Curl Surge RTE
# JavaFX
# Rich Internet application
# Windows Live Silverlight Streaming
Developed by Microsoft Corporation
Initial release April 2007
Stable release 2.0.40115.0 (19 February 2009) [+/−]
Preview release 3.0.40307.0 (18 March 2009) [+/−]
Written in Combination of C++ and C#
Silverlight applications can be written in any .NET programming language. As such, any development tools which can be used with .NET languages can work with Silverlight, provided they can target the Silverlight CoreCLR for hosting the application, instead of the .NET Framework CLR. Microsoft has positioned Microsoft Expression Blend versions 2.0 and 2.1 (2SP1) for designing the UI of Silverlight 1.0 and 2 applications respectively. Visual Studio 2008 can be used to develop and debug Silverlight applications. To create Silverlight projects and let the compiler target CoreCLR, Visual Studio 2008 requires the Silverlight Tools for Visual Studio.
A Silverlight project contains the Silverlight.js and CreateSilverlight.js files which initializes the Silverlight plugin for use in HTML pages, a XAML file for the UI, and code-behind files for the application code. Silverlight applications are debugged in a manner similar to ASP.NET applications. Visual Studio's CLR Remote Cross Platform Debugging feature can be used to debug Silverlight applications running on a different platform as well.
In conjunction with the release of Silverlight 2.0, Eclipse was added as a development tool option.
download silver light : http://www.microsoft.com/SILVERLIGHT/