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QGIS - QGIS is a desktop geographic information system, or GIS.
MICRODEM - MICRODEM is a Geographical Information system (GIS) which manipulates digital map data.
Mapbox - An open source mapping platform for custom designed maps. Our APIs and SDKs are the building blocks to integrate location into any mobile or web app.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
Google Earth Pro - Google Earth Pro allows you fly anywhere around the earth to view satellite imagery, maps, 3D building, and terrain, from galaxies in outer space to the canyons of the ocean.
MapWindow GIS - MapWindow is a fully free and open source geographic information system project.