Peer-to-peer connections are possible right now with Chrome and Firefox using WebRTC peerconnection. The WebRTC connection is bootstrapped through a server (ST

Peer-to-peer connections are possible right now with Chrome and Firefox using WebRTC peerconnection. The WebRTC connection is bootstrapped through a server (STUN and TURN), but that's the case with almost all peer-to-peer software (take a look into how Bitcoin or Bittorrent is bootstrapped if you don't believe me). But anyone can run a STUN and/or TURN server. Once the connection is bootstrapped, it's entirely peer-to-peer between browsers.