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KDiff3 is a graphical text difference analyzer for up to 3 input files.


  • 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.

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