DuMP3 is a duplicate and similar file finder. It finds exact duplicate binaries by hash, similar text files by substring content, images (JPG, BMP, GIF, PNG, etc) by color and audio files (MP3, WAV, OGG, etc) by wave data. Future: fonts, video.

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User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

User Reviews

  • It works... if you know how to follow instructions... When setting the Environment Variable do install first the java version that the info in the cmd says. Looks like it has potential, but isn't very usable. No installer or anything. "Java Virtual Machine Launcher Could not find the main class: net.za.grasser.duplicate.DuMP3. Program will exit." endolith If you see this error that endolith says you might need to set the needed variable.

  • I've used it previously on a WinXP machine. I like it then. I've tried to get it to run on my Win 7 machine and can't seem to get it to run. I've tried different methods with no success. I would love to see this updated or at least my problem solved. I don't know if it is a local setting error or something different.

  • Easy to run dump3

  • Love dump3

  • Pretty hopeless. Not even basic instructions on how to use this.

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Additional Project Details


English, German, Turkish

Intended Audience

Advanced End Users, End Users/Desktop, System Administrators

User Interface

Command-line, Java SWT, Java Swing

Programming Language


Database Environment

HSQL, JDBC, Microsoft SQL Server, MySQL, Oracle