VyRT - A virtual social experience, made by Jared Leto and co
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Airbnb Online Experiences - Book and join one-of-a-kind activities from your home.
Facebook Local - Discover places to go and events happening near you
Airbnb Experiences - Airbnb expands beyond rentals — now hosting Experiences
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets