I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
stook stoke stock stocky stack stake steak steek stick stoic stuck sticky stag
took betook retook stook toke bittock buttock futtock mattock stock stoke
soot sooty stoa stoae stoai stow