"You canker blossom!" 3 Shakespearean Insults
(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].