Event Finda - Find events near you, and all around the world.
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Rally by Eventbrite - Find the best local events and rally your friends to join
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Event Hunt - Startups and Tech Events Curated By Locals
OwnTracks - Cross-platform location sharing