WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Houseparty - Brining empathy to online communication.
Booyah - Video chat with up to 12 friends at the same time.
Messenger Day by Facebook - Share your day in Messenger
Heaps - Tinder with your friends. Party in a group.
Tribe - Create highly targeted Twitter ad campaigns in 5 mins