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.
joust just joist jest jesuit gest gist
joust roust oust most gusty lost foist busty bust coset moste boost moist phaseout lusty post roost costa ghost guest rusty dost dusty tost gust coast fusty hosta dust musty rust ghosty boast just oast hoist host doest missout toast joist must cost gusto quest lust posit roast roset wost