You are correct, there are plenty of FTP/SFTP apps for OS X.. none of them allow you to mount as a disk though that can be browsed via the Finder or used by non-SFTP enabled apps.
For AFP, i have tried (via Finder's "Connect to Server"):
--- (not sure what the .irish is, but it shows up in my path in a standard SFTP client, so i figured i'd try it)
with all those, Finder says its connecting to the file server "peon1083.", and after trying both my SSH password and FTP password, get:
"Unknown user, incorrect password, or login is disabled. Please retype the name and password or contact the server's administrator."
i have also tried those URI's on my local command line:
mount_afp -i afp://email@example.com/mydomain /Volumes/mydomain
(yes, i've created /Volumes/mydomain )
at the command line, i get:
mount_afp: the mount flags are 0000 the altflags are 0020
mount_afp: AFPMountURL returned error -5023, errno is -5023
this seems like a password issue as described:
I can succesfully login to both SSH and FTP fine, so my password is good (unless AFP has its own password that needs set somewhere).
this may all be a moot point due to the cleartext password, but i want to see what my options are.