It's not a real project until there are screenshots.
A browser with at least minimal canvas support (i.e. not IE 6, 7 or 8).
Run a vnc server, run the WebSockets proxy, load the page, and connect! See the project README for more details.
LGPL-3
You can download this project in either zip or tar formats.
You can also clone the project with Git by running:
$ git clone git://github.com/kanaka/noVNC