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.
coolest coaliest clast coleseed coalesced closet gluiest calceate closeout callosity glost closed calcite classed
coolest molest lest mealiest fellest holiest fliest ruliest realest paliest oiliest lowliest bulliest eeliest bluest fullest celeste silliest dullest teleost wooliest chillest shaliest shoalest blest least illest violist chilliest tallest wiliest sciolist sliest volost vilest celesta roiliest woolliest palliest shelliest foulest palest vealiest jowliest coaliest jolliest holist hilliest halest shoaliest
coalesce coles colessee coleus colies coolies cools coulees cookless