Sonos One - A self-contained, Alexa-connected speaker from Sonos
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Apple HomePod - The new home entertainment system by Apple
Metastream - Watch streaming media with friends
Sugr - All-in-one AIoT Voice Solution and Core Voice Algorithms
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.