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.
poleyn pollen plena pleon plan pollinia pelon plain plane pylon paulin pillion
poleyn leno woolen sullen relleno colleen plena mullen lien alien baleen fallen villein clean lean galena gallein galleon glean glen melena mullein olein pleon pollen sileni xylene woollen
pole pol pule poly pollee poll polio poilu plie plew pilei plea pilea pile pele paleae palea pale polo pool apollo