Other than FTP command, is it possible to use HTTP to DOWNLOAD, UPLOAD, Delete or list the file from FTPServer?
download:
wget <the url>
Upload:
curl -F "file=@localfile;filename=nameinpost" url.com
wget --header="Content-type: multipart/form-data boundary=FILEUPLOAD" --post-file postfile <url with uploadform>
Since you have posted a generic question so please take it as generic answer.