Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Nomad List - Find the best place to ❤️ live, 👩💻 work, and 💃 play
TechEvents.co - Tech and startup events aggregator
Podshare - A membership based live/work community.
Facebook Local - Discover places to go and events happening near you
Wanderlog - Collaborative travel planner with combined itinerary and map