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.
piss pis pies pass puss pois piso pias pious paise posse pussy passe paisa poise peise passee psi pus pas pes poussie pews pays pees paws poos pice posy hyps peso pose peas pehs pows pase pease psoae piece paseo poesy hypos pizza psoai hypes poohs pause
hiss kiss miss gneiss piss diss wiss is