Slack - A messaging app for teams who see through the Earth!
Hop - Spike makes working easier and more efficient. Saving you and your team time, sanity, and a lot of headaches.
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.
Superpeer Channels - Beautiful livestreams with your subscribers
Facebook Messenger - Facebook Messenger is a faster way to message.
Around.co - Around.co is an app that provides video calls to remote teams all around the world.