Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
TripIt - TripIt is a travel app that creates a master itinerary to organize all of your plans for your vacation or work trip in one spot.
Wherezat - Wherezat is Fast, free, and easy way to share your location with your friend or family.
Sygic Travel Maps - Itinerary planner for independent travelers
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
WorldMate - WorldMate is a travel app that helps individuals plan and organize trips. The app is available for Android and iOS mobile devices, and it is free to download and use.