No WWDC app for OS X videos yet. You could help us improve this page by suggesting one.
WWDC Together - Watch and discuss WWDC together
Apple TV - New Apple TV running tvOS
WWDC TV - Watch WWDC video on your Apple TV
Mi Box - 4K Ultra HD streaming and gaming box powered by Android TV
NotesKey - Time travel through Apple's keynotes
NVIDIA Shield TV - Streaming box with Google Assistant and Google Cast.