This is similar to magic-warmhole[^1] but has the added plus of being written in golang, which means one doesn't have to install multiple packages, just one binary. Thanks for sharing.

[^1]: https://github.com/magic-wormhole/magic-wormhole

If you want go, there is a magic-wormhole implementation called wormhole-william [1].

Rymdport [2] is a decent cross-platform app using it.

[1] https://github.com/psanford/wormhole-william [2] https://github.com/Jacalz/rymdport