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.
poetise poetize poets pots pets potties pieties poetess pouts potsy peats pottos pities pietas patois petsai putties patties peds pits pods pats puts pitas poods patsy pates pedes padis putts pitsaw pittas potsie paddies piteous puttees
betise poetise etuis gaieties ketose metis metisse moieties pieties poetize reties retuse setose yetis tis