Rainmeter displays easy to customize skins, like memory and power supply, RSS feeds and weather forecasts, directly on your desktop.

Many best rainmeter skins are even functional (rainmeter themes): they are able to record the important points and to-do lists, launch your preferred applications, and take control of your media player - all inside a clean, unobtrusive interface that you could rearrange and personalize the way you like. Raimeter reaches once an application along with a toolkit. You might be only restricted to your imagination and creativity. You can download raimmeter from the below link.

Rainemeter Download:
Download: Rainmeter | 2.1 MB (Open Source)
Website: Rainmeter