Trafi - The most connected transport app!
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Passportinc - Passport specializes in enterprise business applications and payments for parking and transportation.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Mapbox Mobile - Open source SDK for maps on mobile
LockOnMe - LockOnMe is a location-sharing app, displaying targets and associated Points Of Interest on maps & fun radars.