Rainmeter 4.5.18 (revision 3727) changelog:

Rainmeter is open source software distributed free of charge under the terms of the GNU GPL v2 license. Rainmeter is at once an application and a toolkit. Many skins are even functional: they can record your notes and to-do lists, launch your favorite applications, and control your media player – all in a clean, unobtrusive interface that you can rearrange and customize to your liking. It’s easy to keep an eye on your system resources, like memory and battery power, or your online data streams, including email, RSS feeds, and weather forecasts.

Rainmeter skins provide you with useful information at a glance. Enhance your Windows computer at home or work with skins handy, compact applets that float freely on your desktop. Rainmeter is the best known and most popular desktop customization program for Windows. You are only limited by your imagination and creativity. Rainmeter allows you to display customizable skins on your desktop, from hardware usage meters to fully functional audio visualizers. Rainmeter is a free, open-source platform that enables skins to run on the desktop.

Instaling Rainmeter 4.5.18.3727