The SkyLight Project has created a fully functional window based operating system written in JavaScript. The code is compatible with the latest versions of all of the major browsers. Supporting a remote server based file system and using the latest Ajax techniques the SkyLight Project is a demonstration of the future. With a complete suite of standard controls ranging from text boxes and html editors all the way to color pickers and file save dialogs.
The BETA version will be released on the 1st of October 2009. If you want to take part in it please use their contact us page to submit your application.