ForkLift

ForkLift is a powerful file manager and ferociously fast FTP client clothed in a clean and versatile UI that offers the combination of absolute simplicity and raw power expected from a well-executed Mac software.

ForkLift will connect to any remote server FTP, SFTP, Amazon S3, WebDAV, the SMB and AFP shares on your local network,- pretty much anything you can plug into or hook up to a Mac. ForkLift also carries a complete toolbox for managing your files, including Folder Synchronization, Batch Renaming, Archive handling, Application deleter, editing files over remote connections and many more. All these power features are packaged into a Finder-like, dual-pane interface that delivers superior workflow while remaining absolutely familiar to use, along with QuickLook, Spotlight search and all.

Features:
Completely re-built from scratch inside and out
Disklets (you can mount a remote connection as a disk and access it from any app)
Synclets
Droplets
List view, Column view, Icon view and Coverflow
Transfer queue
Handles almost any archive format: Rar, Zip, Tar, Gz and a dozen more
Search and filter (now with RegExp support)
Improved Sync
Stacks
Integrated favorite manager
Advanced Multi-Rename
Workspaces
Dual-pane view
Folder Synchronization
Tabs
Amazon S3 support
WebDAV support
Remote edit and preview
Growl support
QuickLook local and remote files
and much more to discover