QGIS (Quantum GIS)

QGIS, or Quantum GIS, is an open-source geographic information system (GIS) that allows users to create, visualize, analyze, and manage spatial data. It serves as a tool for mapping and understanding geographic information, enabling users to overlay various data layers, such as demographics or environmental information, on a map. QGIS is widely used by professionals in fields like urban planning, environmental science, and disaster management, as well as by hobbyists. Its flexibility and free access encourage collaboration and innovation, making it a popular choice for both individuals and organizations looking to work with geographic data.