A free Windows utility version 2.14 for comparing and synching directory trees. To select which directories and file extensions you wish to consider you must compose filters, text files with a complex format involving regex expressions to either include or exclude a set of files. Unfortunately, you have to figure out how it works pretty much from looking at examples. The documentation assumes you already understand how it works. It needs a set of increasingly complex complete examples.
Though it is a GUI (Graphic User Interface), it makes no use of colour or icons. The results of all comparisons are plain text strings. It is hard to find the anomalies by eye.
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