Tools
QGIS
A Free and Open Source Geographic Information System (GIS). Create, edit, visualize, analyze and publish geospatial information on Windows, Mac, Linux, BSD, and mobile devices. It offers GIS tools for desktop, web, server, and mobile platforms.
Visual exploration & visualization
gvSIG Association
gvSIG Online is the integral platform for the implementation of Spatial Data Infrastructures (SDI) and corporate GIS in free software. It allows to share geographic information in the cloud, generate maps in 2D and 3D applications easily.
Cultural Heritage