Windows4all.com is a Microsoft Silverlight based online virtual operating system (sometimes called a Web OS or a Webtop or a cloud computer). It is a website that simulates an operating system inside a web browser. Windows4all.com replicates the desktop environment of a modern operating system. It can give you a familiar work interface that looks the same whether youâ€™re working at your home computer, or remotely from a borrowed or public computer. You can launch applications right away without installation.
Windows4all.com is web-based and requires Silverlight 3 to operate. Application runs in Silverlightâ€™s security sandbox. By default code is restricted from accessing your file system or doing anything that could hurt your machine. Besides desktop, taskbar, start menu and sidebar, currently it includes such applications:
The system also supports installing program functionality. But this program should be developed in Silverlight and be available in Internet or local file system.