Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Soon - Never miss something awesome
OwnTracks - Cross-platform location sharing
Morse - Create, shout out, and discover nearby events in real time