I am not aware of a 3rd party application that would show you duplicates based on file contents in bulk. There is a file compare feature in PDM Pro but that requires manual labor to clean the duplicates. For the core of the problem, I recommend these approaches. 1) provide the user with an "engineering sandbox" folder to where the user can freely store duplicates (the only place allowed) - knowing that the files are going to be purged (destroyed) by administration regularly. or 2) If you have PDM Pro, you can completely remove any and all privileges of "adding/renaming files"; and the only way that the user can create new files, is by using PDM templates. Some organizations have to resort to these measures to maintain/enforce vault consistency and file integrity. These powerful features are there for when administrative action is required - which in that case, "use the force you must..." -Yoda
Sorry to hear about the management-related situation there, I hope that clears up by the user's own choice, and you won't have to take action.
Francisco | CSWS-DMA