Mosaic – Bring the Metro UI of Windows 8 to Windows 7
Mosaic is an application that brings Metro UI to your desktop.
It is a set of live widgets that shows some content from the web or from your PC. Some widgets (e.g. people widget, weather widget) have fullscreen extended view called hub.
Mosaic supports WPF and HTML(5) widgets (it uses IE9 engine if it installed). HTML widgets are visible only in fullscreen mode (for technical reason).