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C12-12 KDiff3

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Software Profile

ID C12-12
Product KDiff3
Company Developed by Joachim Eibl
Web Site
Software Type Desktop
Costs Under GPL License
Test Date 2012-03-27


Ranking for all tests: 14
Ranking for Source Code Test: 14
Ranking for Text Test: 12
Summary: not useful


KDiff3 also offers a comparison of files or folders, but when it compares folders it also only looks to see if there are files of the same name in the folder, it does not compare the files themselves. Only two files can be compared at the same time. The system accepts .java files, but only does a textual comparison of them. It can also determine if two files are binary equal.

It is able to show the identical parts, the different parts, or the entire file. In order to deal with umlauts it just deletes them. The report is printable, although often an entire paragraph is marked, even though there is only one word that is different. If multiple words are changed, the system is confused and reports nothing.

In summary, this system is not suited for university use in detecting collusion.


Screenshot 1: Report

Screenshot 2: Complicated Settings

Screenshot 3: Equal Files Dialog

Business Promotion

„KDiff3 is a diff and merge program that

    • compares or merges two or three text input files or directories,
    • shows the differences line by line and character by character (!),
    • provides an automatic merge-facility and
    • an integrated editor for comfortable solving of merge-conflicts,
    • supports Unicode, UTF-8 and other codecs, autodetection via byte-order-mark „BOM“
    • supports KIO on KDE (allows accessing ftp, sftp, fish, smb etc.),
    • Printing of differences,
    • Manual alignment of lines,
    • Automatic merging of version control history ($Log$),
    • and has an intuitive graphical user interface.“


official website