DupliCompare
Compare folders.
Find duplicates. Free.
A tiny, free desktop app for Windows, macOS and Linux that compares two folders and hunts down duplicate files across your drive — no upload, no cloud, everything stays on your machine.
Portable, single-file executables — nothing to install. All builds and source: Releases · Source on GitHub
Folder A vs. Folder B
Recursively compares two folders by name and size, and flags every file that's missing, extra, or mismatched.
Duplicate finder
Scans any folder and groups files that are byte-for-byte identical (size + MD5 hash), not just same-named.
Side-by-side cleanup
Open any duplicate group and see every copy side by side — delete, rename, or move each one right from the app.
Sortable results
Click any column to sort by size, copy count, or name — large result sets load progressively without freezing.
HTML reports
Export a clean, shareable HTML report of every difference or duplicate group — no account or internet needed.
100% local & free
Open source and MIT-licensed. Nothing leaves your machine — no cloud upload, no telemetry, no cost.
1. Download
Grab the build for your OS above — a single portable executable.
2. Pick folders
Choose Folder A/B to compare, or one folder to scan for duplicates.
3. Clean up
Review results side by side and delete, rename, or move files in place.