Google Maps offers a very interesting application. It presents a list of Philhellenes who offered their services to Greece and supported the Greek War of Independence, and indicates on the map the country and the city of origin of each one of them.
This application enables users to have a global view of the geographical regions where the Philhellenic movement was developed, and the provenance of Philhellenes.
Up to date the list mentions 92 names of Philhellenes. SHP will cooperate with Google to extend it to include all known names, and important information on them.
You can access the map and the associated information here.