Ranked in these QuestionsQuestion Ranking
Pro Beautiful and Easy to use
The app is Beautiful and easy to use, as well look amazing along side other osx apps
Pro Can enable a server connection as a normal disk in your Finder
So you can access your storage without the Transmit client.
Pro Supports Amazon S3 & WebDAV
In addition to FTP, allows exchanging data with SFTP or WebDAV servers or your Amazon S3 storage.
Pro FTP Sync
Scans local and remote for difference and only transfer modified files. It's not rsync, but it's the next best thing