Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
NetBuddy - Netbuddy is a virtual network operator for a mobile device.
Twisper - Passionate travelers showcasing their positive experiences in greatest locations.
Wikivoyage - the free worldwide travel guide that anyone can edit.
Five Claps - Travel and local guide based on the social recommendations