Silverlight is an Internet technology that makes possible showing cross-browser and cross-platform multimedia content. It was developed under WPF (Windows Presentation Foundation) technology to enable rich, interactive and visually stunning ASP .NET websites. It uses XMLA (eXtensible Application Markup Language) that describes user interface and is one of the .NET Framework elements since of the version 3.0. Together with JavaScript and AJAX supports rich media capabilities and let designers and web developers express their own creativity. Websites supporting Silverlight technology are often called the next generation web applications. Silverlight projects can be created in Microsoft Expression Blend. Creating web applications is now more pleasant and exciting.