Skype is for connecting with the people that matter most in your life and work. It's built for both one-on-one and group conversations and works wherever you are – via mobile, PC and Alexa. Skype messaging and HD voice and video calling will help you share experiences and get things done with others.

Jitsi is a free open-source video conferencing software for web and mobile. Make a call, launch on your own servers, integrate into your app, and more.

Facetime makes it super simple for collaborating teams to jump on a video call.