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WWDC Together - Watch and discuss WWDC together
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
WWDC TV - Watch WWDC video on your Apple TV
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
NotesKey - Time travel through Apple's keynotes
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets