MAPS.ME - Fast, detailed and completely offline maps for mobile devices
Printmaps.net - Make high-dpi maps for print applications within minutes, using the Printmaps editor. Put custom geo data such as routes or shapes onto your map, or geocode hundreds of addresses to populate your map with POIs.
Radarbot Free - Radarbot is one the best navigation system for smartphones, including Android and iOS.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
Waze - Waze is the world's largest community-based traffic and navigation app. Join other drivers in your area who share real-time traffic and road info, saving everyone time and gas money on their daily commute.
HERE WeGo - HERE WeGo - Maps - Routes - Directions - All ways from A to B in one