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.
posse pose poussie poise passe passee poos piss pois puss posy pass pase pows paseo paise hypos pease poesy poohs psoae pious pussy pause peise psi powwows pas pes pus pis pace peas pays puce pias piso hyps pehs pees paws pies pice peso pews
fosse posse ose masse mosey tissue mosso lessee bouse koss tasse noise pose fesse bossy foss mouse bowse louse loss dose cosie nose chowse goosey chose choose owse whose touse roose souse hoise boss douse passee joss poussie rouse fossa loose cuisse coss issei issue moss lose toss rose house hosey mousse wrasse dowse doss lossy hose reissue dassie jesse chouse gussie chasse cosey poise passe ossa goose noose lowse lassie choosey mossy loess fossae moose nosey tassie tusseh youse