Head-to-head · Duplicate File Finders
Fast Duplicate File Finder vs CloneSpy
Fast Duplicate File Finder leads on 0 checks, CloneSpy on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreFast Duplicate File Finder · 7.5/10
- Free planboth
- Most featuresFast Duplicate File Finder · 4 of 4
Fast Duplicate File Finder scores higher on our rubric for duplicate file finders: 7.5 against 6.8 out of 10; our editors rank them #10 and #18.
Fast Duplicate File Finder is the better fit for windows users scanning varied storage. CloneSpy is the better fit for free Windows users needing link management.
- Fast Duplicate File Finder fits best
Windows users scanning varied storage
- CloneSpy fits best
Free Windows users needing link management
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Side by side
| Feature | Fast Duplicate File Finder 7.5/10 Visit ↗ | CloneSpy 6.8/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.5 | 6.8 |
| Ranking | #10 in Duplicate File Finders | #18 in Duplicate File Finders |
| Best for | Windows users scanning varied storage | Free Windows users needing link management |
| Pricing model | Free plan + paid | Free |
| Starting price | — | Free plan |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Desktop | Desktop |
| Platforms | Windows | Windows |
| Support | Docs | |
| Built for | Solo, Small business | Solo |
| Features Fast Duplicate File Finder 4/4 · CloneSpy 2/4 | ||
| File preview | ✓ (best) | Not checked yet |
| Automatic selection | ✓ | ✓ |
| Recycle Bin / Trash | ✓ (best) | Not checked yet |
| Folder exclusions | ✓ | ✓ |
| Specs | ||
| Platform coverage | Windows | Windows |
| Scan locations | Folders, computers, local drives, diskettes, CD/DVD-ROM, USB flash drives, external hard drives, NAS, network computers and drives | Selected local folders and files; checksum files made from DVDs or hard drives can be used for comparisons. |
| Match methods | Byte-by-byte content comparison; similar files; file size; similar file names; same file size and name | Binary content comparison; file name, title or extension; same name or title with similar size; zero-byte status. |
| Our review | ||
| Pros |
|
|
| Cons |
|
|
| Our verdict | Fast Duplicate File Finder is Windows software for locating and removing duplicate files across folders, local drives, external storage, NAS devices, and network locations. It suits users who need more than a filename comparison, with… Read the review → |
CloneSpy is a free Windows utility for locating duplicate and zero-length files across local folders and hard drives, DVDs, network drives, and checksum files. It suits Windows users who want detailed control over how duplicates are… Read the review → |
Strengths and trade-offs
Fast Duplicate File Finder — where it wins
- Scans local, external, NAS, and network storage
- Compares exact and similar files with internal previews
- Automates selection and supports several cleanup actions
Where it doesn't
- Windows-only platform coverage
- Similar-file scans are limited in the free version
- Advanced export and command-line tools require Professional
CloneSpy — where it wins
- Compares identical contents regardless of filename, date, time, or location
- Supports DVDs, network drives, checksum files, and local storage
- Replaces redundant files with shortcuts or NTFS hard links
Where it doesn't
- Windows-only platform coverage
- Published version 3.43 dates to 2019
- Less focused on media-oriented duplicate management
- Fast Duplicate File Finder7.5/10 · Free plan
A Windows duplicate finder with exact, similar, network, preview, and cleanup tools.
Visit Fast DuplicateFull verdict → - CloneSpy6.8/10 · Free plan
A capable free duplicate finder with strong link and checksum options for Windows.
Visit CloneSpyFull verdict →
All duplicate file finders comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update