QGIS (Quantum GIS) is a cross-platform free and open-source desktop geographic information system (GIS) application that supports viewing, editing, and analysis of geospatial data. Developed by OSGeo, Open Source Geospatial Foundation
License: Open Source
OpenGeo Suite is a proprietary software suite that offers a user-friendly interface and comprehensive data management tools, making it suitable for organizations with specific geospatial needs. In contrast, QGIS is an open-source platform with extensive community support and a wide range of plugins, making it more flexible and customizable but potentially more complex for beginners.