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.
cramboes crambos crambes crams cramoisy crimes crumbs cremes creams corymbose corymbous cramoisie cormous corymbs grammes crummies corms grams gouramies gramas grimes caroms grumes kermes carroms kermess kirmess curiums grumous grammas grumose gouramis gremmies kermesse gorms grooms karmas kermis kormas
cramboes brumbies corymbose corymbous crambes crambos
crambe crambo cram caramba cream creamy crumb crumby scram