How can I free the disk space allocated by duplicate files?

Question / Problem

How can I free the disk space allocated by duplicate files?

Answer / Solution

Beside of a simple deletion of redundant duplicate files SpaceObServer offers the possibility to deduplicate chosen files. This will recover the disk space allocated by your duplicate files but leave links to the files content in your file system.
Note: Before deleting or deduplicating any duplicate files you should ensure that the listed files are really redundant and not used, e.g. as part of a backup.