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.
kotows kowtows kotos ketose koodoos kits cots kats kites goods katas keets kytes gouts coots goats coats kudos gowds cotes quotas kiddos coatis cottas coitus quoits quotes coatees cooties goatees goodies kiddoes kitties
tows stows kotows kowtows tods ghettos datos stews lottos ghettoes riotous vetoes pottos stoss widows mottos photos toss meadows buteos lotos toes autos dittos dattos ottos mottoes tattoos setose toys taos jatos ratos patois nowts kotos taws tots tews dows rotos ketose gowds setous stoas dowse shadows