Street Map Mobile

Nokia shows off an in-door 3D mapping system using a protocol layer on top of Bluetooth 4.0 and it looks pretty good, as it can provide highly-accurate maps inside of venues.

maps.google.com - Use Google Maps for Android to discover offers near you in the US only. To find these offers tap on “Maps” and then tap on “Offers.” If you see something you like you can click on it to learn more.