I think my approach is yet different from others in the browser-based approach. In the open source version as described here, I don't add anything like a login. I'm able to avoid installation and registration entirely.

Simplex has nice ideas around routing messages. Im open to feedback about comparing the webrtc approach to simplex in the post here. it would be a stretch to call it onion-routing, but is 2 peers use different turn relay servers while on VPN, I think that's that most network hops you can do in my app. simplex has their own cool approach... but you'd be comparing apples and oranges.

as for contributing, I'm sure other projects have "got it" without my help. I'm just doing my own approach which I think is distinct from others.