"Sigma File Manager" is a free, open-source, quickly evolving app
n³ The unorthodox terminal file manager
The open source projects that ship with Synology NAS.
Search, find and manage duplicate files and folders with this program
Increase your system performance with this easy to use tool
Monitor changes in a directory from within the Windows command line
Searches NTFS volumes almost instantly
FDF: Find Duplicate Files
Partition Clonning Tool