Foursquare City Guide - Foursquare City Guide is a Free to use mobile application that will lead you to the perfect spot anytime anywhere around the world.
GetYourGuide - Get tickets to the most popular attractions while travelling
Sygic Travel Maps - Itinerary planner for independent travelers
Klook - Discover & book amazing experiences at exclusive prices
Flamyngo - Create a city guide with help of your friends.
Airbnb - Book unique places to stay and things to do.