CloudBerry Explorer for Amazon S3 provides a user interface to Amazon S3 accounts allowing to access, move and manage files across your local storage and S3 buckets. Amazon S3 file manager by MSP360™ is available in two versions: Freeware and PRO.
Freeware version. Free S3 browser for Windows supports all the basic functionality including Smart Restore and AWS Import/Export support.
PRO version. Comes with all the functionality of the freeware version of plus ability to encrypt and compress files before transmitting to archival storage and upload files in multiple threads.