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.
patsies potsies ptoses ptosis petsais poetises poetizes putzes petasos petasus pitsaws paduasoys poetesses poeticize
footsies potsies patsies tootsies quietuses ptosis daisies meatuses lotoses latices cutises ketoses tassies ketosis tatsois geodesies hiatuses mutases poetises stases coituses dassies fetuses mitoses notices ptoses foetuses betises poetizes petsais mitosis outsees fatsoes mitises lotuses lattices outsize situses stasis tootses whatsis
pats pates patois patsy patties peats potsie spats