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.
steroid hysteroid stereoed stroud stride strode satyrid steered strait sturdy stared stored strati stretto starred stretti striata storied stirred sutured seatrout stearate start strut sturt strata street stretta strette striate
hysteroid steroid deride droid hydroid toroid bedrid meteoroid deuteride
steer stere stereo strow stroy aster asteria ester