This page is designed to help you find out whether dupEx is good and if it is the right choice for you.
Finding duplicates is only half the job. The other half is deciding which copy to delete — because information lives not only inside a file, but also in its name and in the folder it sits in. Delete the wrong identical copy and a date, a place or a name is gone.
dupEx combines exact detection with a safe choice:
Control over what is scanned and selected
Built for Linux desktops
Scanning and finding duplicates is free and unlimited — only deleting needs a license.
Listed in
Byte-for-byte verification
Optional direct comparison of every duplicate, not only hashing
Live results
Duplicates can be reviewed, selected and deleted while the scan is still running
Selection rules
Pick copies to delete by age, path, name or regular expression, whole folders included
Protected folders
Reference folders: nothing in them can be selected or deleted
Compare groups
Files in the same group are only compared against other groups, not with each other
Safe deletion
Move to trash or delete, always with confirmation
Network shares
SMB shares, mounted permanently or opened on the fly in the file manager, scanned directly
Storage tuning
Scan strategy adapts to SSD, HDD and NAS; hash cache for fast repeat scans
Filters
Size range, file types, include/exclude masks, same name or extension
Statistics
Detailed report after each scan: files per phase, data read, time, reclaimable space
File-manager integration
Right-click in Nautilus, Nemo, Caja, Thunar, Dolphin and COSMIC Files, plus drag & drop
Large collections
Handles hundreds of thousands of files
Languages
23 languages
Themes
Light and dark mode, follows the desktop theme
Packages
deb, rpm, AppImage, Flatpak, Snap, tar.gz
Privacy
Works offline, no ads, no tracking
Its focus on the second half of the job: not just finding duplicates, but choosing safely which copy to delete. Information also lives in file names and folders, so dupEx pairs exact detection (hashing plus optional byte-for-byte verification) with selection rules, protected reference folders and live results that can be acted on while the scan is still running.
For certainty and safety on Linux: byte-for-byte verification instead of "probably identical", protected reference folders, confirmation before every delete, and a clear view of which files cannot be deleted and why. It integrates with the common Linux file managers, handles network shares and hundreds of thousands of files, and ships for all major package formats. Scanning is free and unlimited; the license is a one-time purchase, no subscription.
Linux desktop users with large, grown file collections — photos, documents, media archives, backups spread over several drives and NAS shares — and Linux power users who want exact control: byte-for-byte verification, regex selection rules, protected reference folders and network shares. Both want to reclaim space without the risk of deleting the wrong copy.
It started in February 2026 as a hobby project: a way to compare large files bit by bit. During development, another tool reported two files as duplicates that differed in a single bit — if one copy is damaged, the intact one might be the one that gets deleted. That set the standard: dupEx has to be certain. What began as a tool for personal use grew into a product, tested on 13 Linux distributions, 7 desktop environments and 6 package formats before the stable 1.0.0 release in September 2026.
A C engine with BLAKE3 hashing, SIMD assembly for the byte-for-byte comparison (SSE2, SSE4.1, AVX2), OpenMP for parallel work and SQLite for the hash cache; libmagic for file-type detection; a GTK4 interface written in Rust (gtk4-rs).
We have collected here some useful links to help you find out if dupEx is good.
Check the traffic stats of dupEx on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of dupEx on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of dupEx's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of dupEx on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about dupEx on Reddit. This can help you find out how popualr the product is and what people think about it.
Do you know an article comparing dupEx to other products?
Suggest a link to a post with product alternatives.
Is dupEx good? This is an informative page that will help you find out. Moreover, you can review and discuss dupEx here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
