Travellar - A social travel app
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.
RoomForTea - A female-friendly housing network in London, UK.
Hometown Tourist - Local recommendations to discover the best of the city
Magpie - Female travelers club - meet women like you when you travel
inviita - inviita is a free app that instantly creates tours that match your mood, in any city in the world.