The Dynamic Mapping Suite includes a Locations Plotter tool for plotting interactive markers on a choice of base maps. The interface takes only a few minutes to learn how to use with easy postcode search or point-and-click options for setting markers and colours. Basic popup captions can also be edited directly in the interface. This system is great if you want to plot a few dozen locations.
Example 1: British nuclear sites plotted on monochrome base map
Green markers are active nuclear plants; dark red are decommissioned. Click on either the markers or the listings to bring up popup infoboxes about each site.