Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.
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
Around - Find people to hang out with.
3veta - Modern meeting experience for remote teams designed by a remote team
Touchbase - Quick live video discussions for remote teams
Boomcaster - Boomcaster is highly functional and featured internet-based audio and video conferencing software that has been known for its sumptuous recording and network quality.