The new Metro Menu in Windows 8 has been designed for touch based interfaces, however it works as smoothly as on Desktop and Laptop devices. If you are wondering how to see All Apps for your Windows 8 in the Metro Menu, you need to do this through the Metro Menu itself. It gives you an exact estimate of the number of applications installed in your PC:
1. Open up Metro Menu
2. Right click on any App, now on the bottom right, click All Apps
3. It is as simple as that. Here it would show you a metro screen listing all applications installed in your PC categorized company-wise.