Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Xaddress - Give 7 billion people an instant physical address
LockOnMe - LockOnMe is a location-sharing app, displaying targets and associated Points Of Interest on maps & fun radars.
what3words - Geocoding system for the simple communication of locations with a resolution of 3 m
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Glintter - Add your favorite addresses and keep them within easy reach