Here you can find a list of my open source projects.
It's a browser detection library for node.js, built on top of express framework. More info at the projects' page: http://rguerreiro.github.com/express-device/.
Roman numerals converter
This is more of a sample project to test several features to one could find in a real world production site. Get the code here. It's hosted at http://romanconverter.herokuapp.com/.
Node.js resolution for the Quine problem
Code here. Hosted at http://quine.herokuapp.com.