For people comfortable with Linux, you might find something useful
(and likely free) here for geneology tracking:
http://www.extension.org/pages/32521...tics-101-video
There is also a geneology program (for humans) that is free, runs on
multiple operating systems, called "Gramps" that you might be able
to use for tomato breeding as well. It has its own web site,
with some screen shots so you can see what it looks like:
http://sourceforge.net/projects/gramps/
Gramps is also included on the (free) Linux Genealogy CD (free in
the sense that you can download the cd image, burn it to a cd-r,
boot the cd-r, and you are running Linux from cd with Gramps
included; no charge, and it will not write to your hard drive containing
windows unless you tell it to; great, low-risk way to get a look at
Linux and Gramps at the same time):
http://blog.eogn.com/eastmans_online...-released.html
(I immediately thought of Linux because this is the sort of thing
that a programming student might write for a class assignment
or a fun summer project or because some relative needed it or
whatever, and it would likely be open source and GPL, meaning
inspectable by expert programmers for security holes and free
for anyone to use.)
If Gramps is usable for this, though, it runs on Linux but does not
require it (there are versions for Windows, Mac OS X, etc).