This is a little project I've been working on to cast my laptop's screen to a remote display (e.g. a conference room projector or my living room TV).

It uses WebRTC + p2pt for a signalling server, and is hosted completely on Github pages without a backend.

It supports casting your camera, screen, and YouTube URLs (for videos where iframe embedding is allowed) with remote scrubbing and media controls. It is not compatible with the Chromecast protocol in any way.