kDIFF3kDIFF3 will, as its name suggests, allow you to diff 3 files.
It is free, open source, well supported and :
- 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.
- Windows-Explorer integration Diff-Ext-for-KDiff3 - shell extension included in installer
