This is the built in web server for Qooxdoo, serving your application.
You can find Qooxdoo on the web at http://www.qooxdoo.org and on GitHub at http://github.com/qooxdoo/qooxdoo.
If you have questions, please ask them at StackOverflow and make sure you use the "qooxdoo" tag when you post.
If you want to discuss anything, please contact us using Gitter in the qooxdoo/qooxdoo group, either via a web browser or via the Gitter app.