= Free Software packages using GEOS = == Language Binding == * Go * [https://github.com/paulsmith/gogeos gogeos] (C API) * Javascript * [https://github.com/kashif/node-geos node-geos] (C++ API) * PHP * [https://geophp.net/ geoPHP] (PHP API) * Python * [http://trac.gispython.org/lab/wiki/Shapely Shapely] (C API) * R * [https://CRAN.R-project.org/package=sf R sf] (C API) * [http://rgeos.r-forge.r-project.org/ rgeos] (C API) * Ruby * [https://github.com/zoocasa/geos-extensions Zgel] (Ruby API) * Rust * [https://crates.io/crates/geos geos] * [https://docs.rs/geo/0.12.1/geo/ geo crate] == Library / Framework == * [https://docs.djangoproject.com/en/dev/ref/contrib/gis/ GeoDjango] - Python (C API) * [https://strk.kbt.io/projects/rttopo/ RT Topology Library] (C API) == Database == * [http://www.postgis.org PostGIS] (C API) * [http://www.gaia-gis.it/spatialite/ SpatiaLite] (C API) * [http://www.ingres.com/ INGRES] (C API) * [http://monetdb.cwi.nl/ MonetDB] (C API) == Application == * [http://www.gdal.org/ogr/index.html GDAL/OGR] (C API) * [http://grass.itc.it/ GRASS] (C API) * [http://mapserver.org/ MapServer] (C API) * [http://www.osgeo.org/mapguide MapGuide Open Source] * [http://www.mapwindow.org/ MapWindow GIS] (C API) * [http://osgearth.org osgEarth] (C++ API) * [https://github.com/PDAL/PDAL PDAL] (C API) * [http://www.qgis.org/ QGIS] (C API) = Indirect Uses * [https://github.com/geopandas/geopandas GeoPandas] (via Shapely) = Proprietary packages using GEOS = * [http://www.mapguide.com/ Autodesk MapGuide Enterprise] * [https://www.cadcorp.com/ Cadcorp SIS] * [http://www.safe.com/ FME] = Software that used to use GEOS = * [https://github.com/openstreetmap/osm2pgsql osm2pgsql] <= 0.92 (C++ API < 3.6) (0.94+ uses Osmium) * [http://osmcode.org/libosmium/ Osmium Library] (C++ API < 3.6) (now uses GDAL)