Kartenmaterial kostenlos für viele Navigationsgeräte downloadbar. Die Karte wird von Privatleuten aus aller Welt gepflegt, aber auch von öffentlichen Instituten/Ämtern (auch genutzt).
The Wikipedia of maps, companies don't get to tell you what route to take or where to eat because someone paid them as advertising.
They also don't get to track your movements or what you're just looking at due to using OpenStreetMaps rather than their own systems.
In some places they have better maps than Google Maps.
"OpenStreetMap is a free worldwide map, created by people like you.
The data is free to download and use under its open license. Create a user account to improve the map."