It's based on <a target="_blank" rel="noopener noreferrer" href="https://en.wikipedia.org/wiki/WebRTC">WebRTC</a>, a free and open-source project for web browsers.
For more information, please refer to our <a target="_blank" rel="noopener noreferrer" href="https://framasoft.org/en/trademarks">Trademark Code of Conduct</a>.