QGIS - QGIS is a desktop geographic information system, or GIS.
SAGA GIS - SAGA - System for Automated Geoscientific Analyses - is a Geographic Information System (GIS)...
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.
Spotzi - Spotzi is an easy-to-use FREE online GIS/data mapping platform for businesses/professionals.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
BatchGEO - Make maps from a list of multiple addresses, create a mobile optimized map or locator.