Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
ToT: ThisOrThat - Let your friends choose this or that for you
FriendsTonight - Meet new friends to join your friends, tonight
sup - The first creep-free way to see nearby friends
Triton - Triton College is the perfect place to start, continue, or finish your education, with something to help you succeed.