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.
coleseed coalesced closed classed coolest callused coaliest calloused closet glossed glaceed glassed calceate closeout gallused clast glazed glozed
coleseed leased allseed blessed coalesced oilseed pleased released
coles colessee cols coleus cowls coulees cools colossi colies coils colas coals coalesce clues clews calesa ogles