OpenStreetMap is a great project. We all know that… And recently I finally had the pleasure to use it to geolocate partners and events of a french think-tank. The project can be see here : http://apps.institut-gouvernance.org/geoloc_fr.html . Beyond OpenstreetMap, this geolocation software uses Jquery UI, and OpenLayers and a JS library called BDIS. Everything is under GNU GPL.

The XML file that contains the data of the 2 layers is quite simple :

Another project, using the same software and much easier to understand, is available here http://micromacro.exemole.fr/.