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.
proteide proteid parotid parroted parotoid prided ported parted prated pirouetted pirated prodded partied periodid prettied parodied periodate prutot paraded partita partite peridot predate