In short, Cartagen lets you make beautiful, customized maps with a simple stylesheet.
Maps are styled with Geographic Style Sheets (GSS), a cascading stylesheet specification for geospatial information – a decision which leverages literacy in CSS to make map styling more accessible. However, GSS is a scripting language as well, making Cartagen an ideal framework for mapping dynamic data. See About Gss and Gss Usage for more on GSS.
Mobile devices and networks have made possible distributed reporting of geographic and temporal data, from unfolding natural disasters to organizing protests in real time. Cartagen allows users to integrate real time data streams and display them in novel ways.