Cartographer ist eine Thematic mapping library for Google Maps. Damit lassen sich Heatmaps, Pie Charts und Point Cluster auf Karten darstellen
Crowdmap is a tool that allows you to crowdsource information and see it on a map and timeline. It is the Ushahidi platform, built by the team who created Ushahidi as a way for anyone to run their own crowdsourcing site without having to know the intricacies of running their own server. It's free and it's yours to use.
'I, for one, welcome our new giant insectoid overlords'
google maps, osm u.a. offline benutzen