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.
pes pees pies pehs peso pews peas peise pease hypes poesy pus pas pis psi pois paws pace piso pass puss pows puce poos piss pose pays pias hyps pase pice posy pause pious posse paseo peace psoae poise paise paisa poohs piece pacey hypos passe psoai pussy passee piazze