From The Free On-line Dictionary of Computing (19 January 2023):
GDA
<application> (Genetic Data Analysis) A program by Paul
O. Lewis and Dmitri Zaykin, designed to accompany the
referenced book, that computes linkage and hardy-weinberg
disequilibrium and some genetic distances, and provides
method-of-moments estimators for hierarchical F-statistics.
A command-line version by Chris Basten runs under Mac OS.
["Genetic Data Analysis" by Bruce S. Weir, 1996, Sinaur
Associates].
(2009-10-15)