QGIS

About

QGIS is available on Windows, Mac, and Linux as a free and open source tool for spatial visualization and decision-making. It offers cartographic design features for creating maps for desktop, mobile, cloud, and print media, including a layout designer for high-quality, large-format print maps and reporting tools for creating atlases and reports with maps and tabular content.

QGIS also provides tools for editing and analyzing data. Users can digitize and edit points, lines, polygons, and meshes, use curves and CAD-like construction tools, and build forms with a form designer. Its analysis toolset can be combined visually into reproducible workflows and extended with third-party analysis tools. The software supports various data sources and formats, as well as web services based on industry standards.

QGIS is a public project licensed under GNU GPLv2+ and owned by its contributors, so it remains Free and Open Source software. It can be downloaded for free, and the website offers quick-start tutorials, live demos, and documentation.