Daily.co for Intercom - Free video calls & screen shares embedded in Intercom
Slack - A messaging app for teams who see through the Earth!
Pluot Communications - Big-screen video conferencing for startups
Standuply - Run daily standup meetings and track your metrics in Slack
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.
Glide 3 - Lightning fast live video messaging