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.
futon fatten photon phyton voudon phaeton voudoun
bouton puton mouton muton futon ton atone toon voudon jetton newton ketone ratoon beton niton phyton phaeton town tony photon muttony cottony rattoon udon baton cyton tauon ratton jeton cutin mutton tone atony button rhyton stone duotone buttony cotton piton betony rutin seton stony tauten chiton