Web GIS sites that display environmental data, like the Pacific Islands Ocean Observing System (Voyager) or the Web GIS sites developed by the European Environment Agency, have an even larger set of common features, such as the ability to identify layer data at any coordinate, and the capability to plot data in real time.However, there is not, to the best of our knowledge, any open source program that automatically generates Web GIS sites with a minimum set of features that allow efficient publication of 4D geospatial data.