You have seen visual search in Bing, now here’s another Silverlight based site that might leave your impressed.

Windows OS – Made of Silverlight

The site is windows4all.com and it feels like you are running an online copy of the Windows operating system in the browser. (Hit F11 to experience in full screen mode)

Windows4all not only replicates the look and feel of a freshly installed Windows Vista desktop environment inside your browser but comes with a variety of applications that are similar to the default applications included with Windows. These include Notepad, Windows File Explorer, Media Player, Calculator, Sidebar gadgets and even games like Solitaire and Spider.

Double click the IE icon on the desktop (or use the Vista start menu button) to fire up Internet Explorer and you’ll be able to browse the internet live inside this impressive Silverlight application.

It also includes a Notepad and when you save text files using this application, you can open the files again the next time you visit Windows4all on the same computer. You can install additional Silverlight applications into the Windows4all interface; you can pick the installers directly from from the internet or upload the files from your own computer into the Web OS.

If you are a Windows geek who is curious to know how this app was made, go to Codeplex and download the full source code. It would be neat if Microsoft offers some of these features, especially the ability to import Silverlight apps, to Live Mesh in the future!

Originally published at Digital Inspiration by Amit Agarwal.