Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Event Hunt - Startups and Tech Events Curated By Locals
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Facebook Local - Discover places to go and events happening near you
OwnTracks - Cross-platform location sharing
Eventjoy - The Easiest Way To Organize An Event