Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.
WiFi Map - A crowdsourced list of routers and passwords
Nightler - Find the people. Live the night.
Instabridge - Crowdsourced free wifi (now on Android)
PartyUP - See videos from the best nightlife venues in your city.
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.