Windows 8 Modern apps, also known as Metro or RT apps, will use the full screen on your display regardless of how much of the screen they really need. As a result, that weather app, mail program or stock ticker is going to use the entirety of your computer display.
Run modern apps in windows
ModernMix enables you to run multiple Modern apps in individual separate windows on the desktop as well as launch them from the desktop.
Apply custom settings
Modern app window sizes are remembered the next time you launch them.
Pin modern apps to the taskbar
Active Modern apps will also appear on your taskbar where they can be pinned for quick access later.
Bring back the familiar Windows look
Standard Windows 8 title bar is enabled for Modern apps. Explicitly close Modern apps by clicking its close button.