Introduction
Altova website: 
Diff tool
Altova DiffDog 2024 Professional Edition is a powerful differencing application that intelligently finds differences between pairs of directories and between pairs of files. Three-way comparisons of files are also supported. Data can be compared on different bases and according to a variety of options that you can change quickly in the graphical user interface. In addition, DiffDog allows you to merge file differences, synchronize the content of two directories and copy or delete changed files with a mouse click.
DiffDog is a 32/64-bit Windows application that runs on Windows 10, Windows 11, and on Windows Server 2012 or newer, see also Support Notes.
Last updated: 19 October 2023