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.
feisty feist fest fist feast foist fusty fiesta fissate fast vest vasty vesta visit facet vista facete faucet feased fessed ghosty vestee fossette
feisty misty wristy sty stey gist musty fusty gusty gaseity hygieist busty russety feist list ghosty fist stay paucity neist raucity rusty wrist cecity society zooiest doughiest tasty toasty whist chesty shist piosity city hist lusty pesty visit gooiest nasty moist maist vasty piste pasty kist hygeist hoist heist joist wriest hasty vista mist foist cist zesty deist dusty testy waist wist shiest yeasty
fes fease fees fehs fess fesse feus foes