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.
Butter - Butter is a newly launched chatting application that focuses more on the privacy of its users.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
Habit List - Create good habits and break bad ones with the app that keeps you focused.
WebEx - Cisco WebEx Web Conferencing, Online Meetings, Desktop Sharing, Video Conferencing
Around.co - Around.co is an app that provides video calls to remote teams all around the world.