Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Berkanan - Chat with people nearby. Even offline, on an ✈️.
Palaround - Meet people you should be friends with.
Roundio - Explore what people posted to Instagram or Flickr near you
Babble - A more personalized social network