A very simple tool for transferring files between two computers. Linux <-> Windows should just work, uPnP handling, etc - just a crazy simple way to transfer a file without setting up Dropbox, ftp servers or whatnot!
People usually recommend https://file.pizza but it just doesn't work for me.
Now that I think about this it would be beautiful if there was something like stunnel but for NAT hole punching and what not. You would do:
$ send-file FILE
qk11c14pmq7maeod
$
You would send the unique id (that could be also something that gives a QR code to scan or something like random words) over a separate channel. Then you would "receive-file qk11c14pmq7maeod" on the other end. It would be a simple binary that would be easy to embed and call through some pretty UI. Probably generation and scanning of those possible QR codes would have to be a part of the package. The problem would be who would finance servers needed for NAT traversal?
It is strange that most of these tools seem to involve sending your data half way around the world. Guess local doesn't pay?
I just use good old SMB/network sharing - it's not much harder than setting up some program on two devices. Works between Windows/Linux/Android, fast and good enough.