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.
pass passe pas passee peas pase puss piss paws pias pays paisa paseo pussy pease posse pause paise psi pis pes pus poussie pies pacy peso pace pois pees piso posy poos hyps pows pehs pose pews poise psoae hypes poohs pizza peace pious pacey psoai hypos poesy peise
ass bass quass lass mass pass sass tass as