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.
nomads numbats
mads nomads ramadas mods gambades imids hammadas hamadas emyds amids muds gambados maids meds meads mauds mats lambadas limeades mids lameds pomades chamades