Freedom report

Two barsScore 6.4

  • Free tierA free tier is on its own pricing page
  • Runs widely1 of 6 device platforms
  • DocumentedPlans, terms and facts published

DoubleKiller is Windows software for finding duplicate files. It can scan selected directories, complete drives, or computers in Network Neighborhood, then compare files using any combination of names, sizes, modification dates, and contents. Scans can exclude files by name, type, attributes, or size. DoubleKiller presents matching files for the user to choose for deletion or movement to another directory, and its results list can be exported to a text file. The application is a standalone executable: extract it and run it without installation. The maker says it will not alter the system without prior permission. The free version is for private use and permits unlimited folder and file counts, but individual files cannot exceed 2 GB and commercial use is not permitted. DoubleKiller Pro adds a multilingual interface, advanced comparison options, saved result lists, and command-line automation. The paid starting price is $19.95 one-time. The download page lists version 1.6.2.82 dated 2007-07-07, and the maker says development is paused.

Who it is for

DoubleKiller may suit Windows users who want to find and manually review duplicate files across local or network locations. The free version is limited to private use and files up to 2 GB.

What is good

  • Scans directories, drives, and network computers.
  • Compares names, sizes, dates, and contents.
  • Excludes files by name, type, attributes, or size.
  • Standalone executable needs no installation.
  • Exports results to a text file.

What to know first

  • Free version limits individual files to 2 GB.
  • Free version is not for commercial use.
  • Development is paused.
  • Listed release dates to 2007-07-07.

Verdict

DoubleKiller offers configurable duplicate scans and leaves deletion or movement choices to the user. Check the 2 GB free-version limit and paused development status before relying on it.

Get started with DoubleKiller

  1. Visit the DoubleKiller website.
  2. Download the standalone executable for Windows.
  3. Extract the executable and run it.
  4. Choose directories, drives or network computers to scan.
  5. Set comparison criteria and any file filters.
  6. Review the results, then choose files to delete or move.

What the free plan stops at

The free plan is for private use and limits each individual file to 2 GB. It does not permit commercial use.

Questions about DoubleKiller

Is DoubleKiller free?

The basic version is free for private use. The listed paid starting price is $19.95 one-time.

What does the free version limit?

It limits individual files to 2 GB and does not permit commercial use; folder and file counts are listed as unlimited.

Which operating system does it support?

DoubleKiller is listed for Windows.

Does DoubleKiller need to be installed?

No. It is a standalone executable that can be extracted and run.

What does DoubleKiller Pro add?

Pro adds a multilingual interface, advanced comparison options, saved and reloadable result lists, and command-line automation.

Is DoubleKiller still being developed?

The maker’s site says development is paused.

DoubleKiller plans and pricing

All plans
DoubleKiller (free, private use) Free Free for private use · maximum single file size 2 GB · commercial use not permitted bigbangenterprises.de · 8 Oct 2026
DoubleKiller Pro (private use) Unlimited folders and files · maximum single file size unlimited · private use bigbangenterprises.de · 8 Oct 2026
DoubleKiller Pro (commercial use) Unlimited folders and files · maximum single file size unlimited · commercial use bigbangenterprises.de · 8 Oct 2026

Compared on duplicate file finders

Free plan
Yes
Paid from
19.95 one-time
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
Automatic selection
Yes
Recycle Bin / Trash
No
Folder exclusions
No

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