Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
WiFi Map - A crowdsourced list of routers and passwords
Project Fixup - Meet people, not profiles
Instabridge - Crowdsourced free wifi (now on Android)
Palaround - Meet people you should be friends with.
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.