Genealogy Research Organizer (GRO) is a program for Windows that lets you manage your genealogy data. Even complex family relationships become instantly clear, with GRO's intuitive drop-line chart. You can arrange your ancestors as you desire, and GRO automatically draws the lines between individuals representing their relationship.
Double-click individuals to see their events, attributes, partners, and children.
It requires installing these redistributable libraries from Microsoft: MS VS 2015 Redistributable x86
You may need to run in Windows XP compatibility mode.
Although previously available for purchase, GRO is now being offered for free, under the GPLv3 license.
The source code is available on github: cmosher01/gro-redux