Thuban is an interactive viewer for geographic data (GIS), that offers its users diverse advanced ways and means to view and explore this type of material.It is not only a free geographical information explorer but also of open code. So, you can freely use it and also modify it if you wish. Here are some of Thuban+s best features:* Support for data vectors: Shapefile and PostGIS layers.* Support for rasterized data: GeoTIFF layers.* Comfortable and intuitive browsing via maps.* Notes and object identifications.* Legend and classification reader.* Table joining and consultations.* Support for projections.* Support for vector printing and exporting.* It includes an API for Add-ons.* It has support for multiple languages: English, French, German, Hungarian, Italian, Russian and Spanish.* Help file in English.