Geographic information system for the integration of geo-referenced information from public and private entities in the city of Santo Domingo

The study of the Geographic Information Systems has been developed for long time, but its acceptance is better in almost all fields nowadays, once the geographic information systems are developed commercial or paying tools are chosen, however; there are free tools which allow doing the same SIG applications without payment. This article is about the SIG and shows the different most popular free tools in the area which are useful to develop this kind of applications. In the professional community focused on develop this kind of applications will have a standard to decide which one will be the best in each of its projects to implement regarding the use of those tools. Finally, this study includes the different proprietary and free software to develop SIG regarding the priority in the use of the free tools such as: ArgGIS, GeoMedia, GrassGIS, gvSIG, QuantumGIS, et