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.
fist foist feist feisty fiesta fast fest fissate feast vista fusty visit fossate vast vest fossette facet fused ghast ghost vasty vesta vised
feist hygieist wist waist cist neist moist mist maist list kist joist hygeist fist gist hoist hist heist foist wrist deist whist shist