Flow is a nice little FTP client. But it also supports WebDAV and SFTP as well as Amazon’s S3 and mounting an iDisk from a Mobile Me account. Unlike JungleDisk it doesn’t seem to mount S3 as an actual disk in Mac OS X, but it can be used to take files from iDisk to S3, which is fairly interesting. Flow also supports discovering all of the local services over Bonjour, which can be pretty helpful. Overall, it’s a nice little application that’s pretty sleek and I look forward to seeing where they go with it.