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.
PeerTube is developed by <a target="_blank" rel="noopener noreferrer" href="https://framasoft.org">Framasoft</a>, a French non-profit popular educational organization on digital issues.
It employs a developer, <a target="_blank" rel="noopener noreferrer" href="https://github.com/Chocobozzz">Chocobozzz</a>, who works since 2018 on PeerTube projects:
<a target="_blank" rel="noopener noreferrer" href="https://packages.joinpeertube.org/api/v1/ping">PeerTube plugins index</a> development and maintenance;