Cloud Turtle!

Cyberduck is an open source FTP client.

"Dual pane file manager and SFTP/FTP client for Mac OS XForkLift is designed to be the fastest, most powerful file manager for the Mac. Connect to FTP or SFTP servers, manage your Amazon S3 account or your mobile devices over Bluetooth. All these features are beautifully integrated into a sophisticated, yet easy to use Cocoa based interface. Dual-pane view will dramatically increase your productivity along with state-of-the-art features like live preview, spring loaded folders and any-to-any workflow. All this to be topped by tabs, to keep your workspace nice and clean." »

ExpanDrive is a Network file system client for Mac OS X and Microsoft Windows that facilitates mapping of local volume to any SFTP server the user can access. It also can connect to FTP, Amazon S3, RackSpace Cloud Files, OpenStack Swift Object Storage, DreamObjects, WebDAV, Dropbox, Google Drive and Box.com. When a server is mounted with ExpanDrive any program can read, write, and manage remote files (that is, files that only exist on the server) as if they were stored locally.

The SME Enterprise File Share and Sync Solution provides a comprehensive control and management solution to enable secure cloud collaboration across data points for corporations.

Jungle Disk is a leading provider of online storage software and services, leveraging the Amazon S3 platform and Rackspac infrastructure to provide easy to use and cost effective online storage and backup to our customers. The multi-platform Jungle Disk software allows users to access an unlimited online storage space via a virtual drive and also includes comprehensive automatic backup features.

Gladinet Cloud Desktop mounts cloud storage to your local desktop PC. It is a simple desktop application.

CloudBerry Explorer makes managing files in Amazon S3 storage EASY. By providing a user interface to Amazon S3 accounts, files, and buckets, CloudBerry lets you manage your files on cloud just as you would on your own local computer. PRO version offers FTP support.

S3 Browser - Windows Client for Amazon S3. User Interface for Amazon S3. Allows you to manage your Amazon S3 Buckets and files with ease!

CrossFTP is a free FTP, Amazon S3, Amazon Glacier, and cloud storage client.* CrossFTPs main features: Multi-tab Navigation; Unicode support; Bonjour Service Discovery; Archive browsing(.zip,.tar.gz,etc.); Auto-reconnecting and anti-idle; and more.* CrossFTP Pro version is available by a license fee, which further features: Mutli-Thread transfer; Synchronization; WebDav, SFTP, FTPS, Advanced Amazon S3/Glacier support; CouldFront and URL sign support; Remote file edit; FXP; and much more.

The S3Fox Organizer(S3Fox), offers the ability to upload or download files to and from Amazon S3. The interface, which opens in a Firefox browser tab, looks much like that of FTP clients with a dual-pane layout. It displays files on your PC on the left, files on Amazon S3 on the right, and status or information in a panel on the bottom.

FREE online file manager for your Amazon S3 account. Share files with your friends and colleagues online.

DragonDisk is multithreaded S3 Client with lots of useful features and an intuitive graphical user interface.

Amazon S3 gui client Bucket Explorer to create and manage bucket, for web hosting and sharing S3 files. Use it as FTP tool for S3.