Foursquare - Foursquare is all about helping you find new ways to explore your city.
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.
Flamp - Reviews of companies in your city.
Yellow Pages - YP.com local search connects you with over 19 million local businesses.
Pathshare - Pathshare is a beautiful app that helps you share your path in realtime.
Angie's List - Fair price, quality service, and that stripes are always in season.