What is the difference between Silverlight applications and WPF applications?
Silverlight is a web browser plug-in for delivering media and rich interactive applications (RIA) for the web. It runs cross-platform (both Mac and Windows) and cross-browser (IE, Firefox, Safari, and Opera). Silverlight will be used for broad reach interactive media content and browser-based experiences which require cross-platform support and fast and easy deployment. Windows Presentation Foundation (WPF) is part of .NET Framework 3.0. It is used for building rich immersive applications and experiences that can take full advantage of the Windows platform, including UI, Media, offline communication and Document support. WPF applications can be deployed using ClickOnce or run in IE browser. Both Silverlight app and WPF app use XAML to mark-up UI. WPF provides even richer user experience than Silverlight applications. For example, WPF applications can utilize 3D acceleration, GPU rendering, and local file manipulation. However, Silverlight runs cross-browser and platform.