DoubleKiller
DoubleKiller: A mature, low-cost Windows duplicate finder with broad scanning and Pro automation. Ranked #19 of 37 in Duplicate File Finders by our editors (6.7/10); pricing: Free plan; best for windows users wanting a low-cost mature tool.
At a glance
- Editor score6.7 / 10
- PricingFree plan
- Best forWindows users wanting a low-cost mature tool
- Free planYes
- Platform coverageWindows
- Founded2000
- Facts checked22 Sep 2026
Where it wins
- Scans drives, directories, and computers on a network
- Compares names, sizes, dates, and file content
- Pro adds automatic selection and command-line automation
Where it doesn't
- Windows-only platform coverage
- Development has been paused since 2015
- Recycle Bin support is limited to Pro
Our verdict on DoubleKiller
DoubleKiller is a standalone Windows utility for finding and removing duplicate files. It scans selected directories, complete drives, or computers in Network Neighborhood, then compares files using combinations of name, size, modification date, and content. Results can be reviewed manually or selected automatically before files are deleted or moved. It is aimed at Windows users who want a focused duplicate-file tool, including private users who prefer a free option.
The free DoubleKiller plan covers private use and includes duplicate scanning, file comparison, and deletion or moving of selected files. DoubleKiller Pro for private use costs $19.95 one time and adds advanced comparison options, automatic selection by criteria, Recycle Bin support, and command-line support. The commercial-use Pro licence costs $39.95 one time and includes advanced comparison, automatic selection, and Recycle Bin support. Prices are listed per licence and may vary by licence quantity; the Pro plans also include a 21-day refund policy.
Its strongest fit is broad Windows scanning with practical review and cleanup controls. Filters can narrow results by masks, type, attributes, or size, while exports provide result lists for record-keeping. Pro expands matching with CRC32 fingerprints and byte-per-byte comparison, and supports ZIP archives and catalog files. However, the product is Windows-only, development has been paused since 2015, and the listed release is from 2007. Users seeking a current cross-platform tool or actively developed software should choose an alternative; Windows users who value low upfront cost, network scanning, and optional automation should consider DoubleKiller.
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DoubleKiller pricing
All 3 DoubleKiller plans and prices →
DoubleKiller fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Platform coverage | Windows |
| Scan locations | Directories, complete drives, network computers; Pro also supports ZIP archives and catalog files |
| Match methods | File name, file size, modification date, content, CRC32 fingerprint, and byte-per-byte comparison in Pro |
| File preview | Not verified |
| Automatic selection | Yes |
| Recycle Bin / Trash | No |
| Folder exclusions | No |
| Money-back guarantee | 21 days |
| Deployment | Desktop |
| Platforms | Windows |
| Support | Email, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | bigbangenterprises.de |
| Facts checked | 22 Sep 2026 |
Alternatives to DoubleKiller
- AllDupA fully free Windows duplicate finder with broad matching and cleanup controls.9.0
- CzkawkaA free, scriptable duplicate finder for technical users across Windows, macOS, Linux, and Android.8.8
- Wise Duplicate FinderA Windows duplicate finder with free manual cleanup and Pro date-based selection.8.7
See all DoubleKiller alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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