JetS3t 0.8 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The application lies within System Tools, more precisely Backup & Restore.
From the developer:
JetS3t is a free, open-source application suite (and Java toolkit) for the Amazon Simple Storage Service (Amazon S3).
The application suite includes a client for uploading and downloading your data securely to Amazon's S3 service!
There are also five applications included in the JetS3t suite.
You may want to check out more software for Mac, such as Leawo Photo Recovery for Mac, Tenorshare iPod Data Recovery or Tenorshare iPad Data Recovery, which might be similar to JetS3t.