It goes without saying, in order to use these skins, you need to have Rainmeter ( download) installed on your Windows PC. It can be used to display a truckload of extra information (clock, network statistics, processor usage) on the desktop, which itself can be tweaked in unimaginable ways, thanks to the countless skins available for the same. Rainmeter is a free desktop customization program that lets you completely transform the way your desktop looks.