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.
sterol stroll sterile streel sutural sidereal suturally citral sudoral
sterol federal dotterel lateral ruderal triol troll beadroll bedroll bitterly drool droll vitriol latterly literal outroll patrol petrol readerly writerly stroll utterly
stere stereo ester asteria sutra strow star stare starry steer stir store storey story straw strawy stray strew stria striae stroy aster astray estray