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.
pies pes pis pois pehs piso pews peas piss pees pice pias peso paisa pease piece hypes paise peise poise poesy pious piazze pas psi pus poussie posy pows pass puss pays pase paws hyps puce pose poos pace pause peace pacey paseo passe posse pizza poohs hypos psoae psoai pussy
vies hies gies lies looies louies pies wries dies ties shies es is