Here are a few management tools for Amazon’s file storage system S3 and their CDN Cloudfront.
- Firefox Plugin S3fox
- Rightscale has support for both services built into their web based management application (the developer account is free)
- CloudBerry Explorer for Amazon S3 is a nice freeware for Windows with S3/Cloudfront support
- CloudBuddy also is a freeware tool
More on the Amazon AWS Blog.