Whereby (formerly appear.in) - Collaborate from anywhere - video meetings with no downloads

Houseparty - Brining empathy to online communication.

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

Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

Remote Meeting - Remote Meeting with Video, Voice, Chat and Screen Sharing

Rume - Video chat that doesn't feel like work