GIS Viewer is a standalone application for supporting geospatial data visualization and management including:

- layers visualization where the layers reside in multiple data sources;
- layers ordering with respect to the z axis through drag and drop;
- layers filtering through cql;
- layers data visualization;

GIS Viewer has been designed and developed by the NeMIS Laboratory team at ISTI-CNR Pisa, Italy.
The Gis Viewer has been produced with the co-funding of the European Commission in the context of the iMarine project. iMarine (www.i-marine.eu) (RI – 283644) is a Research Infrastructures Combination of Collaborative Project and Coordination and Support Action (CP-CSA) co-funded by the European Commission under the Capacities Programme, Framework Programme Seven (FP7).