QGIS (Quantum GIS) is a cross-platform free and open-source desktop geographic information system (GIS) application that supports viewing, editing, and analys…

GRASS GIS (Geographic Resources Analysis Support System) is a geographic information system (GIS) software suite used for geospatial data management and analy…

ARCHICAD is an architectural BIM CAD software for Macintosh and Windows.

PostGIS is an open source software program that adds support for geographic objects to the PostgreSQL object-relational database.