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.
peasen paesan paisan paesani paesano paisana paisano passion poison
peasen sen weason season risen reseen owsen ossein mason loosen lessen cassene casein cassena hosen hausen basin sewn sene seen reason resewn sasin zazen chosen
pease peas pes pas passe spas peise paps paisa apes paise pies pase pews paseo pause pass pehs peso passee pias paws poesy pays opes peace peps pees upas