Cuddli - Dating for geeks
Nightler - Find the people. Live the night.
Datebox - Everything for a fun date delivered to your door
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Hinge - Find people you want to date through your friends on Facebook.
Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.