What is the best way to instantly share files with someone who

>>61511551
install gentoo

>>61511551

Carrier pigeons.

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>>61511551
Snail mail

Quantum tunneling

>>61511551
Email or a file upload service

If I want to send a file to myself to a different device, I just share the file to a friend over skype and click on it on the new device, which downloads it.

Rate

>>61511551
Fax

>>61511551
Internet

Use SFTP for a single file transfer. The file transfer is encrypted because the connection goes through SSH. The server is a Linux machine that has a SSH server, user account for the client, and allowed the user to log in via SSH. The client runs any operating system. The client connects to the server, and just like FTP, is able to view the remote directory and exchange files.

If file sharing occurs regularly, use Syncthing. It is similar to cloud storage services, but it's decentralized (P2P), making it more efficient. It is ported to Windows.