Rainmeter is a free, open-source desktop customization tool for Windows that allows users to display interactive widgets (called "skins") on their desktop. Among the thousands of available skins, has earned a cult following. Designed by the developer DevilRev (often hosted on DeviantArt), this skin transforms a standard Windows desktop into a futuristic, sci-fi command center reminiscent of Tron , Cyberpunk 2077 , or a starship’s holographic interface.