FileZilla
Also on WindowsTransfers files to and from servers over FTP and SFTP.
Installs from Ubuntu's own software archive.
Looking for WinSCP on Linux? FileZilla does the same job for free, and TuxPick installs it for you.
Install FileZilla with TuxPickIt works on Ubuntu 22.04 and 24.04, and on systems built on them like Zorin OS and Pop!_OS.