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.
tummies tammies dummies tommies tumesce tames tomes tamis times demies toms tams dames doums domes teams tombs dumas dimes demes dumbs teems demise doumas dumbos duomos daimios timeous tomboys
gimmies jemmies immies cammies tammies tummies shimmies jimmies pommies shammies commies chammies jammies whammies mommies mammies yummies tommies dummies rummies mummies zombies mamies lambies shammes ramies femmes amies demies mammeys gimmes momes memes homies roomies mimes mammees mis