Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
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.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Yellow Pages - YP.com local search connects you with over 19 million local businesses.