O Reinstalare de Windows means for the vast majority of users a headache, first of all because after Installation itself a Sistema, I still need to be reinstalled and applications used by each. And Individual installation (one at a time), not only does it mean a big waste of time, but sometimes it can happen to forget about certain applications, because when we want to use them to have the unpleasant surprise to observe that they have not been installed.
For users Windows 8 This problem was half solved, due to a feature al Windows Store, which allows them to install in group all previously installed applications in the store. So how many times they will reinstall the operating system, these will be able to be reinstalled with a single click.
To be able to reinstall Modern applications On a new Windows 8 installation, you must open Windows Store, then to click-right anywhere in it to be displayed Option bar. Click on Your apps.

Sub Apps not installed on this PC you will see a list with all bought applications (or installed free) from Windows Store. You have the option either to Install on all with a single click, by clicking on Select all and then on Install, either you can only select manually Certain applications of these to install them.

It also exists solutions and for the other applications, such as SERVICE ninite.com (Details here) which allows Installation in group of the most used programs by users Windows.
STEALTH SETTINGS – How to reinstall all your Windows Store apps on a new Windows 8 installation