Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
inviita - inviita is a free app that instantly creates tours that match your mood, in any city in the world.
Event Hunt - Startups and Tech Events Curated By Locals
Blink by Groupon - The leading app for last-minute hotel reservations. Always cheaper than the Best Online Rate.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Headout - Explore and book the top attractions, sightseeing tours, events and things to do in your city. Get exclusive discounts and priority access with Headout.