... this tool can be used in scripts for cleanup purposes and others.
Project is entirely Java based and makes usage of the Amazon's AWS SDK for Java. It is intended as a command-line tool (so it can be easily integrated in things like cron jobs etc) however there are plans to to implement a GUI interface too.
This project has been reviewed by SoftPedia as per: http://mac.softpedia.com/get/Utilities/aws-s3-version-mgmt.shtml