Houseparty - Brining empathy to online communication.
New Snapchat - The new Snapchat, redesigned to separate social from media
Booyah - Video chat with up to 12 friends at the same time.
Google ARCore - Google Augmented Reality SDK
Airtime - Hang out with group video, share music & videos
N2 Smartpen - Writes on paper but also mirrors into smart devices.