Ok, here is one of the amazing projects I ever found: “Purefect Desktop”
Purefect Desktop is a desktop environment that running inside the web browser. It will enable user to interact and doing something just like what he does on usual OS’s desktop. There also an IDE to develop an application, games, tools, chat application, etc.
For end-user may be will amaze with the wonderful interfaces, but for the developer (just like me), it is more than amaze, it is exciting, and make me thinking how much time, how many programmers, and how many coffee to finish the project 
This project was developed by Klorofil Collaboration Project, the Indonesian team who developing Klorofil Platform. This subproject is based on Klorofil engine.
You may try the demo here: Purefect Desktop Online Demo
Here is the screenshoot I’ve taken.
Up till now this project is not yet launched to the Open Source community, but I think it will. The other problem is, with currect Indonesian internet connection, it is hard to use this interface to all clients. This desktop environment need enough transfer speed to operate normally.
Whatever, this is a wonderful project and inspiring me 
