Project was closed.

Project Description is a Silverlight based online virtual operating system (sometimes called a Web OS or a Webtop or a cloud computer). It is is a website that simulates an operating system inside your web browser.

windows4all.com_flickr_400.png windows4all.com_twitter_400.png replicates the desktop environment of a modern operating system. It can give you a familiar work interface that looks the same whether you’re working at your home computer, or remotely from a borrowed or public computer. You can launch applications right away without installation. is web-based and requires Silverlight 3 to operate. Application runs in Silverlight’s security sandbox. By default code is restricted from accessing user's file system or doing anything that could hurt user's machine. Besides desktop, taskbar, start menu and sidebar, currently it includes such applications:
  • File Explorer
  • Internet Explorer
  • Video Player
  • Rich text editor
  • RSS reader
  • Virtual PC
  • Notepad
  • Paint
  • Twitter client
  • Flickr viewer
  • Virtual Earth
  • Chat
  • Calculator
  • Games like Chess, Solitaire, Spider etc.
The system also supports installing program functionality. But this program should be developed in Silverlight and be available in Internet or local file system.

Windows4all.png advantages:
  • Convenience and freedom - A personalized desktop is available and accessible from any computer in the world.
  • No more administration - No more software installation, software update, worry about anti-virus.
  • Security - Less prone to typical attacks, viruses, worms, vulnerabilities, spyware and disk crashes.
  • Hardware - Performance doesn't depend much on the speed of your computer.
  • Entertainment - Being online, offers more opportunities for communicating and entertainment.
  • Cost - It is free.

You can see live example at

Questions about the can be asked at

Follow us on Twitter

Last edited Feb 8, 2010 at 7:50 AM by windows4all, version 25