Magic Wormhole is described as 'This package provides a library and a command-line tool named wormhole, which makes it possible to get arbitrary-sized files and directories (or short pieces of text) from one computer to another' and is an app in the OS & Utilities category. There are more than 25 alternatives to Magic Wormhole for a variety of platforms, including Online / Web-based, Windows, Linux, Mac and Android. The best alternative is Syncthing, which is both free and Open Source. Other great apps like Magic Wormhole are RetroShare (Free, Open Source), Onionshare (Free, Open Source), Snapdrop (Free, Open Source) and Send Anywhere (Freemium).
O&O FileDirect makes it possible to share an unlimited number of files without having to load them in the cloud. This way your confidential files are never out of your hands. You maintain complete control over who gets to see them.
portal is a fast and secure file transfer utility for sending files from one computer to any other computer. All communication beyond the initial client handshake is encrypted. If the sender and receiver can reach each other directly, the file transfer involves no servers.