There are so many tools that can transfer files between two computers. I really like ones like this because you don't have to have SSH access or forward any ports to send a file from A to B. Its similar vein to other peer-to-peer utilities like zget [1], sharedrop [2], instant.io (webtorrent) [3], filepizza (webtorrent) [4], magic-wormhole [5], toss [6], dat [7], and many many others.
During Hacktoberfest I also started my own, written in Go, so I could have my friends can use it without installing a Python ecosystem [8].
[1]: https://github.com/nils-werner/zget
[2]: https://github.com/cowbell/sharedrop
[3]: https://github.com/webtorrent/instant.io
[4]: https://github.com/kern/filepizza
[5]: https://github.com/warner/magic-wormhole
[6]: https://github.com/zerotier/toss