Platequery - Report drivers or contact them with license plate lookups
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
WWDC app for OS X - An app to view and watch WWDC sessions on your Mac
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
Avenue - Event messaging app for WWDC attendees
Attendify - Develop relationships at the events that you attend by creating smaller events with just a few people.