Guides by Lonely Planet - Explore city guides curated by experts.
GuruWalk - GuruWalk is a platform to connect travelers (walkers) with local free walking tour guides (gurus), democratizing access to culture and promoting local economies, present in more than 100 countries and thousands of destinations.
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.
Outguided - Feast your eyes on Outguided 2.0!
Lonely Planet - travel guide book publisher
Tales & Tours - The personal tour guide that fits in your pocket