Jitsi Meet – Instant Free Videoconferencing. An open open source alternative to Zoom?

Jitsi Meet offers free, secure, flexible, open-source video conferencing. Start using Jitsi Meet today. Build and deploy secure videoconferencing solutions.

Source: Jitsi Meet – Instant Free Videoconferencing

This looks intriguing. Uses WebRTC in the browser and it has native apps for Android and iOS. And you can find it on Github.