CloudBerry Explorer PRO - BETA offers some advanced features over Freeware version. It makes managing files Amazon S3 in even EASIER, more secure and cost efficienet. 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 feature
Encryption – make sure the data is always protected and only you can view it
Compression – speed up copy process and save on storage and transfer cost.
Chunking – break large files into smaller ones to speed up the process and make transfer more reliable.
FTP support – copy files directly from FTP server to S3 bucket.
Amazon S3 Versioning
Premium support

Main features:

Register and connect to any number of Amazon S3 accounts
Copy files between your S3 accounts
Share buckets and files located on Amazon S3 with other users
Set up file access permissions (ACL)
Automate common tasks with Microsoft PowerShell
Generate external URLs , BiTorrent
Copy/Move in background
Support for content-types
Support for MD5
Support for Amazon CloudFront
Support for CNAMEs and signed URLs
Apply ACL list to child objects (files inside a bucket)
Rename files
Support for Requester Pays
Generate short URLs using http://chilp.it
Setup custom http headers
CLOUDFRONT ACCESS LOGGING support

Benefits:

 With CloudBerry Explorer, Amazon S3 becomes an extension to your local storage. You are no longer limited to the classic data storage on your local drive(s). With CloudBerry Explorer, you can move files to Amazon S3 just as easily as managing them on your local drive(s).
 CloudBerry Explorer allows you to move large files such as photos, videos, and music to Amazon S3 and free up your local storage.
 The files on your Amazon S3 can be shared with anyone who has access to the internet. For security purposes, the S3 accounts can be password protected and access can be restricted.