When comparing Directory Report vs Cygwin, the Slant community recommends Cygwin for most people. In the question“What are the best power user tools for Windows?” Cygwin is ranked 20th while Directory Report is ranked 48th.
Ranked in these QuestionsQuestion Ranking
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.
Pro Additional packages available via Cygwin Ports project
Pro Better default terminal
Cygwin's default terminal "Mintty" is far better than CMD.
Pro You can run graphical applications
It has X Server.
Con Many incompatibilities
A lot of tools don't actually work with Cygwin, and documentation is often sparse, so for many use cases, it's worth the small bit of extra effort to just run a full virtual machine.