Slack - A messaging app for teams who see through the Earth!
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Pluot Communications - Big-screen video conferencing for startups
Arvia for Slack - Start quick video calls in Slack channels.
Moon Dialer - Use free voip & wifi calling app for unlimited international calling. Moon Dialer is one stop solution for call recording, call scheduling and call forwarding.
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.