http://cyberduck.ch/ is open source and does sftp and ftp. i think the ftpfs has been ported to MacFUSE in case you can't script cyberduck but ftpfs isn't that great anyway.
Name:
Anonymous2008-08-05 13:02
Transmit is a personal favorite but you will have to buy it. It's made by Panic, though; that and Coda are the only software I ever bought after stealing.
Cyberduck is good too though.
Name:
Anonymous2008-08-05 19:44
>>16
YummyFTP is rather good. I tried about every single FTP client for OS X, hated all of them. After trying 10 FTP clients, I actually liked YummyFTP. That surprised me so much I even bought it.