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.
fatso fats fates feats fiats fits fads vats fatties fets fatuous vatus fetes fados fetus fetas foots fades ghats foetus fyttes ghauts footsy footies footsie fouettes feds fids fuds futz vets
fatso gaits haets teats reatas katas bats baits coatis ates cates aits matts meatus batts hats vats neats mates hiatus mauts bates shiatsu chats wats tatsoi peats ghats ratos whats pats tates paduasoy bahts seats gats datos qats dawts gnats sates coats beats lats nates ghauts hates beauts meats mats jatos matzo feats cats fates boats goats rats tauts vatus heats eats riatas oats moats dauts kats dates gates satis fats doats cheats pates watts rates fiats patsy tats waits wheats shoats