Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.
Around.co - Around.co is an app that provides video calls to remote teams all around the world.
GoRemote - A free & simple yet powerful European based solution to go remote. Video & audio conferences, screen sharing & chat with end to end encryption. Keep your team close and productive
Whereby (formerly appear.in) - Collaborate from anywhere - video meetings with no downloads
Around - Find people to hang out with.
Team.video - Happier, more productive video meetings