Yelp Reservations - Reservations taken online, front-of-house management, and integration with Yelp.
Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.
simpleERB - An Electronic Reservation Book for restaurants.
PartyUP - See videos from the best nightlife venues in your city.
NoWait - Restaurant Reservations
Tablelist - OpenTable for nightlife