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.
once ounce ones ons onos onus owns
bounce jounce chance whence dance seance rance ponce ounce fence fiance hance hence jaunce faience lance quince launce mince nance nonce nuance once pence pounce science since dunce wince yince