PeerJS simplifies WebRTC peer-to-peer data, video, and audio calls

PeerJS wraps the browser’s WebRTC implementation to provide a complete, configurable, and easy-to-use peer-to-peer connection API. To broker connections, PeerJS connects to a PeerServer. Note that no peer-to-peer data goes through the server; The server acts only as a connection broker.

Source: peerjs.com