Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
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.
WeChat - WeChat is a complete mobile communication and private social networking app.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
Viber - Free and secure calls and messages to anyone, anywhere. Keep your conversations going no matter where you are.
WebEx - Cisco WebEx Web Conferencing, Online Meetings, Desktop Sharing, Video Conferencing