In past we have covered Amazon Kindle for PC now here is Kindle Sync freeware tool for Amazon Kindle synchronization. Kindle Sync is an application that will help you transfer books from PC to Amazon Kindle. This program only detects and transfers PRC files.
Kindle Sync will maintain the same directory structure on your Kindle. Just put all your books (*.prc files) inside directories in your PC. You can have multiple directories. Then start Kindle Sync and point to the root of your directory structure.
Kindle Sync will recognize all your PRC books. You can then send them to your Kindle. Kindle Sync will create exacly the same directory structure in your Kindle.
Download Kindle Sync.