collective.portlet.map is a GMaps integration product for Plone. It leans on the Maps product, reading Maps configurations, and it uses adapters to extract geolocalizations.
Using collective.portlet.map you can have a fully functional google map view in a portlet.
How does it works
1. Install collective.portlet.maps and Maps.
2. Activate the "Map Portlet" and add one or more Location content in a folder. The Map Portlet will appear next to the folder view, showing all the Locations in a handy portlet map.