Comment by kevinsync

PairDrop [0] gets the job done as a "good enough" cross-platform / cross-device AirDrop replacement if you're on the same network.

For practical, casual use with non-tech users (likely on cellular or not the same network), you do need an internet connection though (you can make a temporary "room" that you both join to then facilitate the transfers), and the caveat there is that method transfers slower than if you're on the same WiFi.

It's basically "we have McDonald's at home.." for file transfers lol, but I use it all the time!

[0] https://pairdrop.net