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.
stases stasis situses sudses setaceous seduces
teases judases mutases stases geodesies daisies dassies dazes vitesses hiatuses footsies fetuses decease tusses betises tawses tissues caddises tootses stasis ketoses meatuses mitises touses iodises disease odysseys patsies petasus poetises ptoses situses petasos lotoses cutises tassies tosses doses niduses outsees dosses fatsoes dieses badasses douses dowses taces tasses disses daises sudses poetesses radiuses tussehs foetuses daces coituses goddesses quietuses lotuses metisses mitoses potsies tootsies
satays sets sits sots stays stoas stoss seasides tassets tastes toasts