!Family 
BASIC program to maintain a family tree. Uses the worldwide standard GEDCOM file format to store information.
http://www.pennine.demon.co.uk/family/armbasic.htmGedcomWeb
Converts GEDCOM files into Javascript data suitable for publication on the web.
http://www.sinenomine.freeserve.co.uk/software/index.html#Genealogy
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.
http://www.apdl.co.uk/progs/ancest.htm
Roots
Written by Alex Waugh, this low-cost shareware program allows you to keep track of your family tree in a graphical format.
http://www.cp15.org/genealogy/
