It doesn’t do much, only scans the registry for installed Delphi versions (Starting with Delphi 5, I am not sure about the registry path’s for the older versions. Feel free to send me patches.) and gives you a list of all entries in the Libraries branch. In addition to a list by Delphi version it also gives you a list by entry for all Delphi versions as you can see in the screen shot. That way you can easily compare the same path in different Delphi installations.