I tend to use snapdrop.net when everyone is on the same network otherwise https://www.sharedrop.io/ works well too

Corporate policy blocks Airdrop and removable media, so Sharedrop is my preferred method of transfer.

(not exactly the same but when you control both devices:)

Taildrop

https://tailscale.com/kb/1106/taildrop/

Disclaimer: We built it. Airdrop like functionality for all platforms.

Checkout https://quickit.adidevsoft.com

This looks like a nice tool, but the killer feature of AirDrop is not requiring a local network. The p2p nature of it is why it’s so nice to use.

Syncthing

Syncthing is great software… but it isn’t in the same genre of “send a random one-off file to a person physically close to you with no advanced setup"