Developing GIS With Free & Open Source Software Tags QGIS OpenStreetMap Drupal GNU/Linux PostGIS GeoServer Leaflet MapLibre Developing a GIS software stack with QGIS, OpenStreetMap, Drupal, GNU/Linux, PostGIS, GeoServer, Leaflet, and Maplibre involves integrating multiple components. Read more about Developing GIS With Free & Open Source Software