Send Anywhere - Send whatever you want, wherever you want
NearDrop - An unofficial Google Nearby Share app for macOS
Wormhole.app - Wormhole lets you share files with end-to-end encryption and a link that automatically expires.
Snapdrop - An open source alternative to Alternative to AirDrop.
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Sharik - Sharik is an open-source, cross-platform solution for sharing files via Wi-Fi or Mobile Hotspot