Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Hivemapper - Build maps that reveal changes 🌏
Event Hunt - Startups and Tech Events Curated By Locals
Cat Street View - Explore Japan... as a cat.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Google NightWalk - An audio Streetview tour around Marseille