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.
cozen casein cosign cosine cousin caisson cassena cassene
cozen dozen zein hosen loosen mizen mizzen sozin zazen dizen wizen wizzen chazzen chosen
cozey coz cooees cooeys cosey cozie cozy cokes