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WWDC Together - Watch and discuss WWDC together
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
WWDC TV - Watch WWDC video on your Apple TV
Zoho Backstage - Plan, run, and analyze your event— all from one place
NotesKey - Time travel through Apple's keynotes
Meetup for iOS and Android - Discover groups that are all about the things you love