•Works totally offline (no roaming charges when you are abroad) but also has a (fast) online option
•Turn-by-turn voice guidance (recorded and synthesized voices)
•Announce traffic warnings like stop signs, pedestrian crosswalks, or when you are exceeding the speed limit.
•Optional lane guidance, street name display, and estimated time of arrival
•Supports intermediate points on your itinerary
•Automatic re-routing whenever you deviate from the route
•Search for places by address, by type (e.g.: restaurant, hotel, gas station, museum), or by geographical coordinates
•Carry highly detailed, fully offline maps of any region world wide on your device!
•Display your position and orientation on the map
•Optionally align the map according to compass or your direction of motion
•Save your most important places as Favorites
•Display POIs (points of interest) around you
•Can also display specialized online tile maps
•Can also display satellite view (from Bing)
•Can display different overlays like touring/navigation GPX tracks and additional maps with customizable transparency
•Optionally display place names in English, local, or phonetic spelling

HUKD Member Reviews:

cyuk2 - "This is superb for walking, especially with the free, downloadable map content for offline use on the hills.
Good level of detail too for smaller tracks. You can also load gpx files etc to follow other people's routes."

umataro - "Nokia HERE is excellent but does not currently (at least on android) offer lane guidance. This does.
Waze is online only, OsmAnd can download maps for offline use.
OsmAnd+ works (or worked when I used it) with crowdsourced maps from OpenStreetMaps project and (if you pay extra) with maps from TomTom. When I travelled around the world, I managed to get to areas that NO commercial mapmakers mapped. Literally nobody. Not Google, not Navteq, not Tele Atlas, nobody. Only OpenStreetMaps. So my suggestion is, get this if you want to do a bit of offroading, travel to exotic countries, drive through the countryside, etc."