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QGIS - Free and Open Source Desktop GIS

GRASS - Geographic Resources Analysis Support System

QGIS available on Windows and Linux



Giving the power of spatial visualization and decision making tools to everyone

Create maps: Class-leading cartography / Professional map production / Powerful reporting tools

Edit layers: Exceptional digitizing proficiency / Advanced construction tools / Highly customizable forms

Process and analyze: Comprehensive analysis toolset / Automated analysis workflows / Extensible analysis environment

Share maps: Industry-leading format support / Standards and interoperability / Publish your work

2000+ plugins developed by community