Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Amplichat - Chat with people nearby.
Palaround - Meet people you should be friends with.
Tick Chat - The app, allows people to chat with others in the same area with anonymously.
Babble - A more personalized social network
Stealthy: Secret Messenger - Chat anonymously with friends & strangers