Comparable: Fetch, Filezilla, WinSCP
Cyberduck is an open source client for FTP and SFTP, and is available for Mac OS X and Windows. It supports secure transfers as well as directory synchronization. The user interacts with the user interface, including file transfer by drag and drop and notifications via Growl. It is also able to open some files in external text editors. Cyberduck includes a bookmark manager and supports Apple’s Keychain and Bonjour networking.