The main contribution is the Open City Toolkit (OCT), that it is envisioned as an integrated, open source software empowering citizens, providing them with analytical tools and citizen-centric services in the context of a smart city. It is incorporating the results of the various research lines within the GEO-C phd students. It is designed to keep all the resulting resources (i.e., data, processes, services, guidelines, standards, ontologies, and models) along with utilities, tools and applications that make use of these resources