Free Windows file level deduplication software utility by Highly Reliable Systems which replaces duplicate files on the target directory tree with space saving “links”. Hard drive space saving will be real but won’t be visible from a simple directory view as windows counts the target file size in these views, not the link size which is very small. Google and read more about Links. *NOTE: This software is free and not supported. Use at your own risk. See our white paper on Over-The-Wire backup for an example usage.