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.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
GoToMeeting - GoToMeeting is a web conferencing service offering a range of services which are available on Mac, PC, iOS and Android devices.
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.
join.me - Instant screen sharing. Instant Aha!
Slack - A messaging app for teams who see through the Earth!