Kludget Engine

If you are a fan of Mac OS Dashboard widgets and want to use them on your Windows or Linux Desktop, you must try Kludget.
Kludget Engine is a free utility for Windows and Linux which allows users to use Apple Mac OS Dashboard widgets on their Desktop.

It brings best features from Yahoo's Widget Engine, Microsoft Gadget, Google Desktop, Opera Widgets and Mac OS Dashboard Widgets.

You can download it using following link:

Features List:
  1. MacOS Dashboard Widgets support
  2. Opera Widgets support
  3. Open Source (LGPL)
  4. Cross Platform (Windows,Linux)
  5. WebKit Technology (HTML5)
  6. QT Nokia Framework