Jambo

Jambo Networks provides a service to discover when the people you want to meet are nearby you, wherever you happen to be.

You can use Jambo on your WiFi enabled laptop to discover when your friends, friends of friends, or others that share things in common with you are in proximity. Jambo works both online and offline, so you can use it anywhere in the world, even on your next airplane flight at 30,000 feet in the air.