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.
steamy steam stemmy stem satem stimy stymy stemma stum sedum stime stoma sodomy stymie zootomy
steamy demy tammy team reteam steam stemmy
satay sate seat seta setae site staw stay stew stewy stey stoa stoae stoai seaside teased