What is Q-GIS?

QGIS (previously known as Quantum GIS) is a free and open-source cross-platform geographic information system (GIS) application that allows users to analyze and edit spatial information, in addition to composing and exporting graphical maps. QGIS is commonly used by researchers, government agencies, and businesses for tasks like mapping, environmental monitoring, urban planning, and infrastructure management. It supports a wide array of raster and vector data formats and offers extensive geoprocessing tools.