Geolytics is a free Google map tool for visualizing location related data, or geospecial data. It lets you to make customized maps. It turns your location based data in Excel files into dots, networks, circles, and other shapes on the map.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
Snazzy Maps - Simple & Free To Use Themes for Google Maps
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.
Stamen Maps - Turn any OpenStreetMap location into a watercolor painting
QGIS - QGIS is a desktop geographic information system, or GIS.
MapStyle - MapStyle is a huge library providing a plethora of options for styling the map with detailed customization support.