Directory Monitor is described as 'Can be used for the surveillance of certain directories and/or network shares and will notify you of file changes/access, deletions, modifications, and new files in real-time. Users and processes making the changes can also be detected' and is an app. There are six alternatives to Directory Monitor for Mac and Windows. The best Directory Monitor alternative is FSMonitor. It's not free, so if you're looking for a free alternative, you could try FileActivityWatch or Folder Monitor. Other great apps like Directory Monitor are WatchMyEdit, File Sentinel and DiskPulse.