Wingder - Meet fun people nearby in pairs
Guides by Lonely Planet - Explore city guides curated by experts.
Heaps - Tinder with your friends. Party in a group.
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.
Arrivedo - Curated local experiences around places to stay worldwide.
Lonely Planet - travel guide book publisher