Free, open source, encrypted video conferencing. A great alternative to Zoom or WebEx. The Minds.com social network now integrates this into their Minds.com user interface.
Decentralization
Jitsi will work without centralized DNS.
It will not work without central servers.
User accounts are self-hosted, meaning the user is in full control. It's unknown or is not applicable if Jitsi supports cryptocurrency monetization.