What does Filezilla, CoreFTP, and CyberDuck have in common?

FileZilla is free software that can transfer files over the internet and was developed throughout the year and became a widespread FTP client. FTP stands for File Transfer Protocol and is used to transfer files between computers on a network and can use it to exchange files between computer accounts, transfer files between accounts or a desktop computer, and access online software archives.  CyberDuck is an FTP client from an open source with free-of-charge cloud capabilities and support for Windows, Mac,...  In addition, another FTP Client is CoreFTP which features that include FTP,SSL/TLS, SFTP, HTTP,... and it encrypts account information and transfers data across the internet, protecting data from been leaked. FileZilla, CyberDuck, and CoreFTP all have a correlation of transferring files from networks and accounts that are sent by the client and the server by using FTP.