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.
Voice Swap - Live voice changer & face filters for video selfies.
Booyah - Video chat with up to 12 friends at the same time.
Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
Slack - A messaging app for teams who see through the Earth!