a.placebetween.us - Find a meeting point based on place type
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Works For All - Find a central meeting place for everyone in the group
LockOnMe - LockOnMe is a location-sharing app, displaying targets and associated Points Of Interest on maps & fun radars.
Traveller Stash - Curated directory of 60 resources & tools 4 modern traveller