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.
pedal pedalo petal peddle patly pettle piddly puddly patella pettily patellae
pedal medal dedal daedal dal teal metal needle nodal dual nidal redial radial modal deal redly fetal dale tidal wheedle hyetal luteal setal steal audial foetal hadal ideal geoidal caudal medial dahl pedalo dial petal zooidal bedel feudal wedel chaetal hyoidal
ped peat peaty peed pied aped oped sped