(Disclaimer: I have no connection with Ohana Software or the GetMyAncestors other than as a happy user.)
Is there a (preferably free) application using the nFS API that can download a given line such as a paternal line? I have used GetMyAncestors by Ohana Software, but it downloads the whole breadth of a tree to a given depth. What I am seeking is a program that will download a single-file depth-first line. That would be useful to help figure out where two modern people connect if you suspect they connect on a given line.
Another potential issue for me is I only run Linux, so I would need the program to run under Wine. (GetMyAncestors does.)