A free open source C++ geospatial toolkit.
QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)
MapWinGIS.ocx is a FREE and OPEN SOURCE C++ based geographic information system programming ActiveX Control and application programmer interface (API) that can be added to a Windows Form in Visual Basic, C#, Delphi, or other languages that support ActiveX, providing your app with a map.
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