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QGIS

Mapping, geospatial & alternative cartography toolsGIS softwareWeb mapping
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Open-source desktop GIS for mapping, editing, and spatial analysis.

QGIS is a free, open-source geographic information system for building maps, editing spatial layers, running analysis, and preparing print or digital map outputs. It supports professional cartography, digitizing tools, automated processing workflows, reports, and integration with many geospatial formats and web standards.

Why it stands out

  • Full professional GIS stack available as free and open-source software rather than a restricted viewer or trial.
  • Strong cartographic production tools, including layout design, atlases, and large-format map output.
  • Extensible processing environment with third-party tools and plugins for specialized workflows.
  • Broad interoperability focus, including many spatial data formats and standards-based web services.
  • Contributor-owned project with local user groups, public roadmap information, documentation, and community support channels.

Good to know

  • It is a full GIS application, so users new to spatial data will still face a learning curve despite tutorials and documentation.
  • The core download is a desktop application; cloud and mobile publishing workflows generally require additional setup or companion infrastructure.
  • Advanced workflows may depend on plugins or third-party processing tools, which can vary in maintenance and compatibility across releases.

Under the radar: Before upgrading a production workflow, review the visual changelog for the target release; it is often the quickest way to spot interface, processing, or cartography changes that could affect existing projects.

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Illustration for QGIS