A new final version of i3Geo has been released i3Geo 5.0. This build can be downloaded from the i3Geo project section at the gvsig.org website
i3Geo is completely customizable and can be tailor to the different users using the interactive map. Furthermore, the spatial data is organized in a catalogue that offers online access services such as WMS, WFS, KML or the download of files.
i3Geo was developed by the Ministry of the Environment of Brazil and it is actually part of the Brazilian Public Software Portal.
The main new features of this version can be consulted.
For any doubt about this version you can use the mailing lists.