WiFi Map - A crowdsourced list of routers and passwords
Wiman - Browse over 70 million free mobile WiFi hotspots
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.
WifiMapper - Find free WiFi anywhere in the world
Instabridge - Crowdsourced free wifi (now on Android)
Wificoin - Pay-as-you-go inflight wifi in over 5000+ airplanes.