Magic wormhole isn’t strictly peer to peer nor uses WebRTC as the traffic is routed through a relay server. This was my motivation to build one of these hundreds file sharing tools [0]. My aim was to build a truly decentralised file sharing CLI as basically a drop-in replacement for croc/magic-wormhole - so it seems relevant to mention it here. It’s based on libp2p and comes with its own trade offs.

lotharrr (the author of magic-wormhole) gave kind and valuable feedback when I posted it on HN [1].

[0] https://github.com/dennis-tra/pcp

[1] https://news.ycombinator.com/item?id=26127923