!Family
BASIC program to maintain a family tree. Uses the worldwide standard GEDCOM file format to store information.
Ancestor+
A commercial application to help keep track of your family tree. Originally written by the late Graham Crowe, it is now being maintained by Paul Vigay and sold by APDL.
GedcomWeb
Converts GEDCOM files into Javascript data suitable for publication on the web.
Roots
Written by Alex Waugh, this low-cost shareware program allows you to keep track of your family tree in a graphical format.