Samurize

Samurize is the popular advanced system monitoring and desktop enhancement engine for Windows. IT professionals, overclockers, gamers, and desktop modders alike use Samurize for system data, weather reports, news headlines, and far much more.
Samurize’s features include:
an unrivaled set of built-in meters (Disk utilization, CPU usage, network traffic, system temperatures…)
ultimate customizing and skinning possibilities with no programming data required
monitoring your own pc or others over a network
tiny memory footprint and C.P.U. usage
the primary system monitoring tool with a real WYSIWYG editor
full extensibility via scripts and plugins with a strong plugin SDK/API
minimal software needs (no .NET or Service Packs necessary)
multimonitor support
many usage options (desktop, taskbar and clock clients, server outputting to XML or image formats, screensaver)
Available languages: English, French, Spanish, German, Portuguese, Italian, Dutch, Chinese, Japanese.