Companion - Never walk home alone
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Citizen - Stay safe with instant alerts about nearby crime
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.
Guardians - A safety app for women
Yellow Pages - YP.com local search connects you with over 19 million local businesses.