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.
priory prior prier pareira parrier prairie parer purer parura parure poorer pourer
priory ariary briary briery farriery friary furriery curriery prior warrior
pro pariah peri prao proa prow puri pyro