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.
steam steamy stem satem stemma stemmy stum sedum stime stimy stoma stymy stymie
reteam team steam tam tame teem item luteum retem satem steamy stem tatami totem
satay sate seat seta setae site staw stay stew stewy stey stoa stoae stoai seaside teased