Meetric - Super-productive meeting notes, connected to your calendar
TeamLink - TeamLink is one of the leading and sumptuous solutions that is making web and video meetings extremely easy and efficient.
openmeet - Account free video conferencing with a rooms component that lets you use VC within a physical meeting room. The server can also be hosted in your own cloud for extra privacy/security.
Around - Find people to hang out with.
Ring4 Meeting - Dead simple video conferencing - free, in browser
Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.