Ask HN: Are there any nice free tools to build a family tree? Posted by dinamic on Sunday July 21, 2019 @07:16AM from the ask-hn dept. ( 4 comments | 5 points | on HN )
https://en.wikipedia.org/wiki/Comparison_of_genealogy_softwa...
The main one that is open source is
https://en.wikipedia.org/wiki/Gramps
Improves with every release, but has a learning curve.