chitchat - Chat Room with Selfies and Pagers (yes, pagers!)
Chalk - Chalk is a calculator that tries to do right what others do wrong.
Slack - A messaging app for teams who see through the Earth!
Wire - Private & Secure Messenger
Twist - Check fewer notifications, do more meaningful work. Twist is the team communication app for calmer, more organized, and more productive teamwork.
Bunches - Start and discover free or paid group chats about anything