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.
poperies poppers papers pipers pauperize paupers peepers peppers papyrus paparazzi
aperies moperies japeries peeries duperies poperies cooperies roperies fopperies naperies peris peeress spurries peres apiaries perries pries paries pauperize parries topiaries
popery paper papery piper popper