SFTP
The usual choice. A saved host, a username, and a password kept on this server.
Browser files
The files on the machines you run.
Save an FTP, FTPS, or SFTP server once. The same dark workspace as the terminal app, with the directory one step away.
Sign in to save a server on this machine.
FTPS
FTP with TLS when the machine already speaks it.
FTP
Plain FTP is there for the machines that still need it.
Saved servers
One list for every file host.
Name it, set the protocol and port, and come back to it. The password is written outside the connection list, and the page never receives it again.
Account
One sign-in for this app.
The first visit creates the account. After that, the door stays shut. Email, a photo, and a password change sit in the same profile as the terminal.
Phone
The list first, then the files.
A narrow window shows the servers. Open one and the workspace takes the screen. Install it from Chrome when you want it standalone.
Open the file list.
Sign in on this server. Create account appears only while the first user is still missing.