SSH, IMAP, POP3, SMTP, IOTA, HTTP
protocols all use ports < 1025,
whats the problem?
Did you not read the OP at all?
Standard *nix servers that use those ports are expected to run as *root* but not others.
I'm talking about STANDARD PROTOCOL-s. IOTA is a payment protocol, like SFTP is a protocol to transfer files, its obvious.
You can run iota software as a daemon on NIX systems.