Screenshot of StackBuffer.com interface
The application is pure HTML5 and CSS3 with jQuery running JSONP against StackOverflow API.
MIT License, It's open source.
You can find the demo at stackbuffer.com
Currently running only on Google Chrome Browser.
Ladislav Martincik, martincik.com or twitter @martincik
You can fork it on github at github.com/martincik/StackBuffer