It has been a topic a couple of times on our mailing list, to bring the OO layer of qooxdoo to non-browser environments. I took some time after the last release to check what’s necessary and build a proof of concept. That went so well that I included it into the framework to make it accessible for everyone. You can build your own qooxdoo OO package by just using a new introduced generator job in the framework folder:
./generate.py build-qxoo
That job generates a simple but powerful JavaScript file including all the qooxdoo OO goodness including classes, interfaces, properties, …
My intention was to build a file which can be used in a web worker, for example for running unit tests. But I did also test the file on Rhino and node.js, which are two JavaScript implementations outside the browser, and it worked there just as well.
It still is only a proof of concept but if you are interested give it a try and give me feedback.