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.
pupates puppets paupiettes pipettes pipets pipits peptize poppets
pates pupates spates pats cowpats chapatis opiates deputes repeats spites patsy peats capotes reputes spaits spats sapotes zapateos sopites tiptoes spades chappatis