Iodine - iodine is a free (ISC licensed) tunnel application to forward IPv4 traffic through DNS servers (IP over DNS). Works on Linux, FreeBSD, NetBSD, OpenBSD and Mac OS X.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Swarm - Swarm lets you earn prizes and compete with friends based on the places you go.
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.
Tooyoo Emergency Sheet - Free & secure, emergency medical information sharing
Yellow Pages - YP.com local search connects you with over 19 million local businesses.