TransforMap - There are Plenty of Alternatives. TransforMap makes them visible.
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
People Tracker App - People Tracker helps you to stay connected to your family, friends, employees... or anyone else you want to locate in real-time. People Tracker allows you to stay connected to the people who matter most for you.
Facebook Places - Let your friends help you discover restaurants, hotels, museums and more.
Stay Close - Family Care - Know how your loved ones are, without saying a word.
Umapio - Umapio is a map showing your friends and strangers. Make friends all over the world!