KDiff3 is a file and folder diff and merge tool which
* compares and merges two or three 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
* has support for KDE-KIO (ftp, sftp, http, fish, smb),
* has an intuitive graphical user interface,
* provides a context menu for KDE-Dolphin and Windows-Explorer,
* Support for many encodings and Unicode.
KDiff3 is a KDE Application
KDiff3 requires KDE Frameworks packages provided by Slackware