When comparing Saladin vs Directory Report, the Slant community recommends Saladin for most people. In the question“What are the best file managers for Windows?” Saladin is ranked 26th while Directory Report is ranked 27th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Bookmark support
Pro Built-in file viewer
Which even supports a lot of encodings.
Pro Open source
GPL v3.
Pro Intuitive usable
All commands use the well-known shortcuts.
Pro Lynx-like motion
Cursor left: parent directory, cursor right: go into directory/zip.
Pro White and dark theme
Pro Offers good options for quickly dealing with duplicates
Once duplicates are found you can choose to select certain files based on criteria like when was it created, when was it last modified, size, folders they're in or if the folders they're in contain a particular string.
Pro Reasonable rules for finding both duplicate files and folders
The program can find duplicate files based on any combination of size, name, CRC. It can also compare files byte by byte. Also, it can compare folders (with or without subfolders) based on any combination of size, name, CRC as well as file count.

Pro Gives a clear overview of found duplicates
It shows duplicate items grouped with every second group highlighted.
Cons
Con Blocking file operations
E.g. while moving a large directory structure, you can't do anything else.
Con Can't unpack 7zip files
