DragonDisk is a free file management tool to access Google Cloud Storage, Amazon S3 and Amazon S3 API compatible cloud storage services. The Windows Explorer like graphical user interface provides access to functions such as backup, data organization and sharing. DragonDisk is freeware and works on Windows, Mac OS X and various Linux distributions. A command line sync tool is available for all three platforms, too. Some of the advanced features of DragonDisk include:

• Cut, copy, paste and drag&drop
• Copy or move files between Amazon S3 accounts
• Proxy support
• Job queueing
• Folders synchronization
• Amazon S3 credentials encryption
• Files integrity control
• Metadata editor (custom HTTP headers)
• Filename filters
• Client side compression and encryption support