QGIS

QGIS is a free, open source, cross platform geographical information system (GIS) that allows users to manage, analyze, and visualize spatial data. It supports various operating systems including Linux, Windows, and macOS, and is developed by a vibrant community of GIS professionals.

Many users advocate for QGIS over ArcGIS, citing its efficiency and cost-effectiveness. One user states, "pick QGIS and thank me later."

Another recurring theme in the discussion is the appreciation for QGIS's integration with other open-source projects. Another user notes, "Open source GIS has an awesome list of projects."