Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
Funliday - Travel planning, collaborative editing and share memories
OsmAnd - Global mobile map viewing and navigation for online and offline OSM maps
Sales Rabbit - Sales Rabbit is the industry standard canvassing and door to door sales app.
MAPS.ME - Fast, detailed and completely offline maps for mobile devices
Moovit - For people that use public trasnportation a lot, or who rarely use it but need to on occasion, it can be difficult at times to figure out where you need to be to get where you need to go. Read more about Moovit.