xlCompare has command line mode, which allows to integrate it with all modern version control repositories. Version Control Repositories offers you a way to
store different versions of your file and manage list of changes. Typically they have own Difference Viewer utility. This works good for a text files. But, all Excel workbooks
are binary files. Text comparators are not applicable in this case. You need to configure your Repository, or utility you are using to display differences for Excel workbooks
(XLS, XLA, XLSM, XLSX, XLAM) using xlCompare utility.