GEOS is the most widely used geospatial C++ geometry library, being used by open source projects such as :doc:`PostGIS <postgis_overview>`, :doc:`QGIS <qgis_overview>`, :doc:`GDAL/OGR <gdal_overview>` and :doc:`MapServer <mapserver_overview>`, and by proprietary products including `FME <https://www.safe.com/fme>`_.
GEOS is the most widely used geospatial C++ geometry library, being used by open source projects such as :doc:`PostGIS <postgis_overview>`, :doc:`QGIS <qgis_overview>`, :doc:`GDAL/OGR <gdal_overview>` and :doc:`MapServer <mapserver_overview>`, and by proprietary products including `FME <https://www.safe.com/fme>`_.