www.silverlight.net
taken from wiki
Microsoft Silverlight (code-named Windows Presentation
Foundation/Everywhere or WPF/E) is a proprietary runtime for
browser-based Rich Internet Applications, providing a subset of the
animation, vector graphics, and video playback capabilities of
Windows Presentation Foundation. Version 1.1 also includes a
complete version of the .NET Common Language Runtime, named
CoreCLR, so that Silverlight applications can be written in any
.NET language.
Silverlight aims to compete with Adobe Flash and the presentation
components of Ajax. It also competes with Sun Microsystems' JavaFX,
which was launched a few days after Silverlight. The first
Community Technology Preview of Silverlight was released in
December 2006. Microsoft aims to have a final release by mid-2007.
An unattributed report claimed that Microsoft aims to release
certain parts of Silverlight source code as open source software,
but Sam Ramji, director of platform technology strategy at
Microsoft, said the company has no plans to do so. However,
portions of the Dynamic Language Runtime, included with
Silverlight, have been made available on Microsoft's CodePlex
website using the Microsoft Permissive License.
