Confrere - Professional video calling. No downloads. Just a link.

Around.co - Around.co is an app that provides video calls to remote teams all around the world.

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.

Messenger Group Video Chats - Makes it simple and seamless to stay connected face-to-face

Slack - A messaging app for teams who see through the Earth!

Talkin - Live Twitter townhalls