WWDC Together - Watch and discuss WWDC together
BitTorrent Live - Live streaming video. iPhone, Apple TV, MacOS. Android soon.
WWDC app for OS X - An app to view and watch WWDC sessions on your Mac
PopCast - PopCast is software that allows users to play downloaded videos on AppleTV and ChromeCast devices. Simply drag and drop video files into the software's window, choose a compatible device, and enjoy.
Plex for Alexa - Run your home theater or play your favorite playlists
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.